in the following description of various example embodiments of the invention , reference is made to the accompanying drawings , which form a part hereof , and in which are shown by way of illustration various example devices , systems , and environments in which aspects of the invention may be practiced . it is to be understood that other specific arrangements of parts , example devices , systems , and environments may be utilized and structural and functional modifications may be made without departing from the scope of the present invention . in general , as described above , aspects of the invention relate to securing mechanisms for articles , such as articles of manufacture and articles of wear . the securing mechanisms may be incorporated into any type of article that may have an opening that may benefit from a securing mechanism . such articles may include articles of manufacture , such as handbags , and articles of apparel , such as shirts and pants . in some examples , the securing mechanisms may be incorporated into an article of footwear . an article of footwear may comprise an upper and a sole structure attached to the upper . the upper and the sole structure may define a void in the interior of the footwear for receiving a wearer &# 39 ; s foot . the upper may have one or more textile elements and a foot - receiving opening . a wearer &# 39 ; s foot may be inserted through the foot - receiving opening and into the void . the article of footwear may be secured to the wearer &# 39 ; s foot during use by tightening or making smaller the foot - receiving opening once the wearer &# 39 ; s foot is fitted securely within the void . the foot - receiving opening may be secured in a relatively smaller size to fit the upper snugly around the wearer &# 39 ; s foot and ankle a securing mechanism may secure the foot - receiving opening in this relatively smaller size . the securing mechanism may be incorporated into the article of footwear to help secure the article of footwear to the wearer &# 39 ; s foot during use . the securing mechanism may be attached to any portion of the article of footwear , including , but not limited to the upper and / or the sole structure . for example , the securing mechanism may be attached to the upper of the article of footwear at or near some portion of the foot - receiving opening . in other examples , an article of footwear is a sandal configuration with at least part of the upper exposing portions of the wearer &# 39 ; s foot . some sandals have an upper that includes a strap that extends over the top of the midfoot and / or forefoot region of the wearer &# 39 ; s foot and / or may have a strap that extends around the heel region of the wearer &# 39 ; s foot . such straps and the sole structure define the void or interior of the article of footwear . the straps are designed to secure the upper ( i . e ., the straps ) and the sole structure to the wearer &# 39 ; s foot . any one or more of such straps may include a securing mechanism . alternatively , the strap itself may function as the securing mechanism . in this configuration , the strap / securing mechanism may be attached to the sole structure of the article of footwear . the securing mechanisms may be selectively securable and / or may permit the foot - receiving opening or other space defined in the upper for inserting the wearer &# 39 ; s foot into the interior of the footwear to be adjustable to various sizes . the securing mechanism may cause the size of the foot - receiving opening to be adjusted to a relatively large size for receiving a wearer &# 39 ; s foot into the void defined by the upper and the sole structure . in some examples , a portion of the securing mechanism is selectively releasable from the article of footwear . once the wearer &# 39 ; s foot is securely positioned into the void , the securing mechanism may be adjusted to secure the foot - receiving opening to a relatively small size so that the upper and the sole structure of the article of footwear fittingly engage with the wearer &# 39 ; s foot . for example , the securing mechanism may be adjusted to cause the upper to contract around the wearer &# 39 ; s foot and provide a snug , secure fit between the upper and the wearer &# 39 ; s foot . the article of footwear may be adjusted in any manner to provide a proper fit according to the wearer &# 39 ; s needs . similar to the footwear examples described above , articles of apparel may have a need for selectively releasable securing mechanisms . for example , a shirt or jacket may have an opening that provides access to the interior of the shirt or jacket . the torso or head of a wearer may be fitted through the opening when the opening is in an “ open ” or relatively large size . in order to secure the shirt or jacket to the wearer , the opening may be secured in a “ closed position .” one or more securing mechanisms of the types described above may be attached to the shirt or jacket at or near the opening to secure the opening in the closed position . the securing mechanisms may permit the opening to be enlarged or completely opened so that the wearer &# 39 ; s head or torso may be inserted into the interior of the article of apparel . once the wearer &# 39 ; s head or torso is positioned within the article of apparel , the securing mechanisms may be secured , which may cause the opening to become smaller or close completely . in other examples , an article of manufacture may have an opening through which items or objects may be inserted for placement within the interior space of the article of manufacture . such articles of manufacture may include items such as a handbag , a backpack , a container , and the like . these items often have openings that are selectively securable , in a similar fashion to the openings in the articles of apparel that are described above . for example , a handbag is a container for storing various items . oftentimes , the handbag has one or more openings that is adjustable between an opened position and a closed position . the opened position is the “ relatively larger ” size for the opening and is usually large enough for users to insert objects into the handbag and to remove objects from the interior of the handbag . the closed position would close or substantially close the opening so that the objects within the interior of the handbag would not easily fall out of the handbag and objects would not easily be able to be inserted into the interior of the handbag . one or more securing mechanisms of the types described above may secure this opening in the closed position . such a securing mechanism is selectively securable so that it can be adjusted between the opened and the closed position . in the footwear examples , the foot - receiving opening defined in the upper is configured to receive a wearer &# 39 ; s foot . a securing mechanism such as shoelaces or a strap with a hook and loop fastener may be attached to the upper so that it extends across at least a portion of the foot - receiving opening . a protective element , such as a tongue , may be attached to the upper so that it extends beneath the securing mechanism and between the securing mechanism and the wearer &# 39 ; s foot . such a protective element can prevent the securing mechanism from directly rubbing on the wearer &# 39 ; s foot and causing discomfort . any suitable protective element may be incorporated into these examples . when the foot - receiving opening is adjusted to a first , relatively large size , the opening is large enough for the wearer &# 39 ; s foot to be inserted into the void defined by the upper and the sole structure . once the wearer &# 39 ; s foot is inserted into the void ( interior of the footwear ), the foot - receiving opening may be adjusted to a relatively smaller or “ closed ” position . the securing mechanism may secure the opening in the small , “ closed ” position to provide the wearer with a snug , secure fit . the securing mechanism may be attached to the upper and / or the sole structure or any other suitable portion of the article of footwear . specific examples of the invention are described in more detail below . the reader should understand that these specific examples are set forth merely to illustrate examples of the invention , and they should not be construed as limiting the invention . the various figures in this application illustrate examples of securing mechanisms for articles of footwear according to this invention . when the same reference number appears in more than one drawing , that reference number is used consistently in this specification and the drawings to refer to the same or similar parts throughout . an article of footwear may include a securing mechanism comprising a first end , a second end opposite the first end , a center portion interconnecting the first end and the second end , and at least one twistable portion that is configured to cause at least a portion of the securing mechanism to rotate around at least one axis from a first position to a second position . the at least one twistable portion is positioned in at least one of the first end and the center portion . in the example footwear 100 shown in fig1 a , the footwear 100 includes an upper 119 and an attached sole structure 121 . the upper 119 defines a foot - receiving opening 120 in a configuration typical of athletic and many other types of footwear . in this example , the securing mechanism is a single strap 102 made of any suitable material including , but not limited to textile materials , rubber , foam , polymers , metals , or any combination thereof . this strap 102 has a first , attached end 104 and a second , free end 106 . the attached end 104 is permanently secured at or near a throat area 124 of the foot - receiving opening 120 of the upper 119 . the free end 106 is selectively securable to the opposing side of the throat area 124 of the upper 119 . further , the strap 102 of this example footwear 100 includes a twistable portion 110 that is attached to the first , attached end 104 of the strap 102 . the twistable portion 110 connects the first , attached end 104 of the strap 102 to the upper 119 . the twistable portion 110 is capable of being rotated around an axis 122 that is generally parallel to the longitudinal length of the strap 102 . the twistable portion 110 also may be rotated around one or more other axes , including , but not limited to , an axis that is generally perpendicular to the longitudinal length of the strap 102 ( e . g ., an axis into an out of the page of fig1 a ). in some example configurations , a second securing mechanism may be incorporated into the footwear 100 . any suitable number of securing mechanisms may be incorporated into the article of footwear . shoelaces or elastic may be incorporated into any portion of the foot - receiving opening to help secure the article of footwear to the wearer &# 39 ; s foot during use . the twistable portion 110 may be twisted or rotated around the axis 122 parallel to the longitudinal length of the strap 102 and may cause the strap 102 to rotate from a first position to a second position . as illustrated in fig1 a and 1b , the strap 102 may have a first surface 116 and a second surface 118 . the first position may correspond to the first surface 116 of the strap 102 being exposed to the exterior of the article of footwear 100 , as illustrated in fig1 a , and the second position may correspond to the second surface 118 of the strap 102 being exposed to the exterior of the article of footwear 100 , as illustrated in fig1 b . the strap 102 may have any suitable number of surfaces . for example , the strap 102 may have a round surface or a polygonal surface ( e . g ., a triangular or square cross section , etc .). in either of those examples , any surface or portion thereof may be exposed in the “ first ” position and the corresponding “ second ” position , when the twistable portion is rotated around the axis 122 that is parallel with the longitudinal length of the strap 102 . any number of “ positions ” of the straps may be included , based on the shape and configuration of the strap itself in the example illustrated in fig1 a , the first position of the strap 102 may correspond to exposing to the exterior of the footwear 100 the first surface 116 of the strap 102 . the first surface 116 may have a first appearance . the second position may correspond to exposing to the exterior of the footwear 100 the second surface 118 of the strap 102 . the second surface 118 may have a second appearance . the first appearance and the second appearance may have different characteristics . fig1 a illustrates the strap 102 in the first position and fig1 b illustrates the strap 102 in the second position . fig1 b illustrates that the twistable portion 110 is rotated 180 ° around the axis 122 defined along the longitudinal length of the securing mechanism 102 with respect to the first position of fig1 a . however , the twistable portion 110 may be rotated any distance around the axis 122 parallel with the longitudinal length of the strap 102 . in one example , the first appearance may be a first color and the second appearance may be a second color that is different from the first color . the wearer may alternate between the two colors by rotating the twistable portion to cause the strap to rotate from the first position to the second position . in another example , the first appearance may illustrate a first logo and the second appearance may illustrate a second logo that is different from the first logo . the first appearance and the second appearance may be any desired physical or aesthetic characteristics , including but not limited to color , texture , pattern , illustrations , material , graphics , and the like . the wearer also may be able to attach objects or other items to any portion of the strap . in another example , each opposing side of the strap may have a transparent exterior window so that users can place removable inserts into a pocket formed between the window and the remainder of the strap . the inserts may have various pictures , graphics , colors , etc . wearers also may be able to design or decorate their own inserts . any suitable insert may be utilized for display in the transparent window . the securing mechanism may be attachable to the article of footwear in any suitable manner . the securing mechanism may be releasably attached or permanently attached to the upper or the sole structure of the article of footwear . in some examples , one end the securing mechanism may be permanently attached to the upper of the article of footwear by glue , thread , cement , molding , sewing , stitching , mechanical connectors , and the like at or near some portion of the throat area of the foot - receiving opening . the other , opposing end of the securing mechanism may be selectively securable to ( i . e ., selectively releasable from ) the upper . as some more specific examples , the securing mechanism may be a typical hook and loop type fastener comprising a strap of material with one end permanently secured to the upper on one side of the throat area and a second , opposing end that is selectively releasable from a position along the opposing side of the throat area . the example strap 102 illustrated in fig1 a and 1b has a first surface 116 and a second surface 118 . the first surface 116 is facing toward the exterior of the article of footwear 100 in fig1 a and toward the interior of the article of footwear 100 in fig1 b . the loop portion 126 of a hook and loop fastener is attached to the second surface 118 of the strap 102 at its second end 106 . the hook portion 128 of the hook and loop fastener is permanently attached to the upper 119 along the throat area 124 of the upper 119 . the hook portion 128 may be secured in any suitable position on the upper 119 and / or the sole structure 121 . this configuration allows the loop portion 126 and the hook portion 128 of the hook and loop fastener to be selectively released or selectively secured to one another . thus , the second , free end 106 of the strap 102 may be selectively releasable and selectively securable to the upper 119 in the example illustrated in fig1 a and 1b . as shown in the examples illustrated in fig1 a and 1b , the first , attached end 104 of the strap 102 and the second , free end 106 of the strap 102 are attached to opposing sides of the throat area 124 of the upper 119 . either of these ends may be positioned along the throat area 124 or any other location along the foot - receiving opening 120 . in some alternative examples , one or both ends of the strap may be attached to other portions of the upper or to any portion of the sole structure . in another alternative example , the first end and the second end of the strap are both selectively releasable from the upper of the article of footwear . any of the selectively releasable ends may have a selectively securable securing element such as a hook and loop fastener , a button , a snap , a buckle , a magnet , or any combination thereof , that may selectively secure the selectively releasable end ( s ) to any suitable portion of the article . in the examples in which both ends of the strap are selectively releasable , the twistable portion ( s ) may be positioned in any of the first selectively releasable end , the second selectively releasable end , and / or the center portion . referring again to fig1 a and 1b , the first , attached end 104 of the securing mechanism 102 may have a twistable portion 110 . the twistable portion 110 may be capable of causing the securing mechanism 102 to rotate around at least one axis 122 . the twistable portion 110 may be any element that is able to cause rotation around one or more axes such as , but not limited to , an elastic material , a ball and socket arrangement , a thread and screw configuration , and any other suitable rotatable element . for example , fig1 a and 1b illustrate an article of footwear 100 having a securing mechanism 102 with a twistable portion 110 that includes an elastic material . the twistable portion 110 illustrated in fig1 a and 1b comprises a first elastic segment 112 and a second elastic segment 114 . the first elastic segment 112 and the second elastic segment 114 are capable of expanding , flexing , and twisting in various directions , thereby causing the securing mechanism 102 to be stretched and twisted along multiple axes . in fig1 b , the twistable portion 110 of the securing mechanism 102 has been rotated 180 ° around the axis 122 from a first position that exposes the first surface 116 to the exterior of the footwear 100 ( shown in fig1 a ) to a second position that exposes the second surface 118 to the exterior of the footwear 100 . the second , free end 106 is released from the upper 119 to facilitate the rotation of the twistable portion 110 . in the examples illustrated in fig1 a and 1b , the twistable portion 110 rotates about the axis 122 to cause the first , attached end 104 , the center portion 108 , and the second end 106 of the strap 102 to be rotated 180 ° ( i . e ., between the first position and the second position ) about the axis 122 . in variations of the examples illustrated in fig1 a and 1b , the strap may have more than one twistable portion . the plurality of twistable portions may be positioned in any portion of the securing mechanism . for example , a securing mechanism may have a first twistable portion and a second twistable portion . the first twistable portion may be positioned in the first end and the second twistable portion may be positioned in the center portion or at the second end of the securing mechanism . any number of twistable portions may be included in the securing mechanism in any portion of the securing mechanism . referring again to fig1 a and 1b , the example twistable portion 110 comprises two elastic segments , a first elastic segment 112 and a second elastic segment 114 . any number of elastic segments may be included in the twistable portion 110 . when the securing mechanism 102 is rotated around the axis 122 , the first segment 114 and the second segment 116 cross over one another , as illustrated in fig1 b . fig1 b also illustrates the twistable portion 110 in the second position so that the second surface 118 is positioned to face toward the exterior of the article of footwear 100 . in another example , the twistable portion 110 may be positioned in or engaged with the center portion 108 . fig2 a - 2d illustrate the securing mechanism in various positions and / or as other alternate arrangements . in these examples , two securing mechanisms 202 , 204 are present . in fig2 a , the securing mechanisms 202 , 204 are both in a first position in which their respective first surfaces are both facing toward the exterior of the article of footwear and their second surfaces are facing toward the interior of the article of footwear . fig2 b illustrates an article of footwear having two securing mechanisms 202 , 204 that each have their respective second surfaces facing toward the exterior surface of the article of footwear and the first surface facing toward the interior of the article of footwear . in fig2 c , the first securing mechanism 202 is positioned in the first position and the second securing mechanism 204 is positioned in the second position . fig2 d illustrates an example in which the securing mechanisms 202 , 204 are both in the first position but the respective center portions have been crisscrossed over one another ( e . g ., each strap &# 39 ; s twistable portion may be considered as having been rotated about an axis running in and out of the page of fig2 a ). fig3 illustrates a variation of the strap illustrated in fig1 a and 1b . an article of footwear 300 has a securing mechanism 302 with a twistable portion having one elastic segment 304 . when rotated around the axis 306 , the elastic segment 304 flexes and stretches to cause the securing mechanism 302 to rotate from the first position where the first surface 308 is exposed to the exterior surface of the article of footwear 300 to the second position where the second surface ( not shown ), opposite the first surface 308 , is exposed to the exterior surface of the article of footwear 300 . while the invention has been described with respect to specific examples including presently preferred modes of carrying out the invention , those skilled in the art will appreciate that there are numerous variations and permutations of the above described systems and methods . thus , the spirit and scope of the invention should be construed broadly as set forth in the appended claims .
articles of footwear often have securing mechanisms that allow wearers to adjust the size of the ankle opening so that wearers may be able to easily insert and remove their foot . such securing mechanisms may have various physical characteristics . many wearers are interested in changing the appearance of the articles that they use and wear . the disclosed securing mechanism permits a wearer to change its physical or aesthetic appearance to suit the wearer &# 39 ; s changing fashion needs . such changes in physical and aesthetic appearance may include changes to colors , logos , textures , images , and any other desirable physical or aesthetic characteristics .