fig1 shows a preferred embodiment of the present invention having a back panel 100 , a leg pouch 110 , a first arm restraint 120 , a second arm restraint 125 , a short blanket arm 130 , and a long blanket arm 135 . in this embodiment the back panel 100 is approximately as long and wide as the combined torso and legs of a typical infant . in this preferred embodiment , the back panel 100 measures approximately 60 cm by 25 cm . however , the back panel 100 and other parts of the invention can be scaled to fit a person of any size . the parts of the present invention are made from sheet material , usually fabric . some fabrics used are cotton flannel , spandex ®, polyester , cotton / polyester blend , ribbed cotton , elastic cotton , cotton waffle , viscose georgette , polyester georgette , rayon , satin , cotton voil , terry voil , cotton crepe , rayon crepe , shantoon , flex , linen , poplin , cambric , sheeting , denim , silk denim , knits , cotton check , cotton crepe check , silk , terry cloth , and cotton interwoven with sterling silver thread . many other fabrics known in the art may be used instead or in addition , depending on the desired characteristics such as elasticity , warmth , weight , breathability , stain resistance , absence of allergens , visual appeal , and other factors . the present invention may be made of a single material or parts may be made of different materials . flexible , non - fabric materials may also be used to provide special characteristics . a short blanket arm 130 extends from a first side 102 of the back panel 100 . the short blanket arm 130 tapers away from the back panel 100 to a first end point 133 and is about 40 cm long , just long enough to wrap once over an infant with enough excess length to tuck into the infant &# 39 ; s armpit . the long blanket arm 135 extends from a second side 104 of the back panel 100 . the long blanket arm 135 tapers away from the back panel 100 to a second end point 138 and is about 100 cm long , enough to wrap around the infant more than once , preferably at least twice . the blanket arms 130 , 135 may be separate pieces sewn , bonded , electrically welded , or attached by other means known in the art to sides 102 , 104 of the back panel 100 , or the blanket arms 130 , 135 and the back panel 100 may be of a single , continuous piece of material . the positions of the blanket arms 130 , 135 may be reversed in any embodiment of the present invention without impairing the utility of the invention . in this preferred embodiment of the present invention , the lower edge 131 of the short blanket arm 130 tapers at a more acute angle with respect to the back panel 100 than the upper edge 132 of the short blanket arm 130 , so that the first end point 133 is horizontally aligned with the center of the infant &# 39 ; s torso . also , the lower edge 131 of the short blanket arm 130 may curve toward the interior of the arm , eliminating excess material that might bunch and place unwanted pressure on the leg pouch 110 . the short blanket arm 130 therefore wraps smoothly and securely around the infant &# 39 ; s torso without interfering with leg movement . the upper edge 137 and the lower edge 136 of the long blanket arm 135 taper at approximately the same angle with respect to the back panel 100 , so that the second end point 138 is horizontally aligned with the child &# 39 ; s navel . therefore , when an infant is laid on her back upon the back panel 100 with the tops of her shoulders approximately even with the upper edge 106 of the back panel 100 , a straight line between the first end point 133 and the second end point 138 of the extended blanket arms 130 , 135 would pass slightly above the infant &# 39 ; s navel . in other embodiments of the present invention the upper and lower tapers of the blanket arms 130 , 135 may be changed as necessary to effect desired pressure distributions . the leg pouch 110 is formed from a roughly rectangular piece of fabric that is sewn to the back panel 100 along a first edge 112 , a second edge 114 , and a bottom edge 118 . a typical leg pouch measures approximately 25 cm wide by 30 cm long . the bottom edge 118 of the leg pouch 110 is sewn to the lower edge ( not visible ) of the back panel 100 , leaving the top edge 116 of the leg pouch 110 open . alternatively , the leg pouch 110 may be an extension of the lower edge of the back panel 100 folded upward and sewn along its vertical edges 112 , 114 . the vertical edges 112 , 114 may also curve inward and outward to form an hourglass profile , allowing somewhat greater restriction of the infant &# 39 ; s legs . the arms restraints 120 , 125 are in a preferred embodiment tapered flaps attached to the back panel 100 at seams 121 , 126 that lie beneath and parallel to an infant &# 39 ; s arms . a typical seam is about 30 cm long . each arm restraint 120 , 125 tapers to a lobe 122 , 127 and is positioned so that it may be wrapped inward around an infant &# 39 ; s adjacent arm . a typical arm restraint measures about 25 to 30 cm from a seam 121 , 126 to the end of a lobe 122 , 127 . the downwardly - tapering lobes 122 , 127 relieve pressure on the infant &# 39 ; s shoulders while providing an easily - used means for securing her arms . the lobe shapes minimize fabric bunching and optimize pressure distribution , but the arm restraints 120 , 125 may also be triangular , rectangular , or any of a variety of other shapes as desired . it should be noted that some of the benefits of the present invention may be obtained with a simplified version consisting only of the back panel 100 and tapered long blanket arm 135 . the dimensions of the back panel 100 and the taper of the long blanket arm 135 allow a more complete wrap and better pressure distribution than does the traditional colic band . however , addition of the leg pouch 110 protects the infant &# 39 ; s feet , simplifies positioning of the infant , and improves containment of the infant &# 39 ; s legs . addition of the arm restraints 120 , 125 allows a caregiver to quickly secure an infant &# 39 ; s arms close and parallel to the infant &# 39 ; s torso . addition of the short blanket arm 130 allows a caregiver to quickly secure the top edge 116 of the leg pouch 110 and the infant so that the long blanket arm 135 may be easily and carefully wrapped to obtain exactly the desired pressure distribution . fig2 a through 2d illustrate a preferred method for employing the present invention . fig2 a shows an infant lying on the back panel ( not visible ) with her shoulders aligned with the upper edge 106 of the back panel , her arms along her sides , and her legs in the leg pouch 110 . fig2 b shows how the arm restraints 120 , 125 are each wrapped around the outside of an adjacent arm , then inwardly so that the arm restraint lobes 122 , 127 can be tucked between the infant &# 39 ; s arms and torso , thereby holding the infant &# 39 ; s arms in an optimum position while subsequent steps are performed . fig2 c shows how the short blanket arm 130 is wrapped over and across the infant and secured by tucking the first end point 133 between the infant &# 39 ; s torso and the proximate arm restraint 125 and armpit , securing both the top edge ( not visible ) of the leg pouch 110 and the infant . finally , fig2 d shows how the long blanket arm 135 is wrapped over the infant , then repeatedly around the infant until the second end point ( not visible ) is reached . the caregiver adjusts the tension on the long blanket arm 135 as it is wrapped to obtain the desired pressure on the infant , with the taper of the long blanket arm 135 tending to concentrate increased pressure under the regions wrapped with the most layers . the second end point 138 may be secured by tucking it under a layer of the long blanket arm 135 , or by a hook - and - loop or other fastener as is known in the art . fig3 shows an alternate embodiment of the present invention is which the top edge 316 of the leg pouch 310 arcs upward . the extra fabric allows the leg pouch 310 to be better secured by the short blanket arm 330 . fig3 also shows an optional hook - and - loop fastener 350 attached to the inner - end of the long blanket arm 335 near the second end point 338 . fig4 shows another embodiment of the present invention in which the lower portion of the leg pouch 410 is divided into a right leg pouch 411 and a left leg pouch 413 , with a gap 415 between to accommodate the buckle of a child &# 39 ; s car seat . fig4 also shows a variation on the blanket arm 430 , 435 tapers , where the upper edges 432 , 437 have very slight tapers and the lower edges 431 , 436 have more pronounced tapers , shifting the end points 433 , 438 and the corresponding area of maximum pressure upward . this and other variations may be combined with other feature variations described herein . fig5 shows another embodiment of the present invention in which an arm pouch 540 is sewn to the short blanket arm 530 along a side seam 542 ; to the short blanket arm 530 , back panel 500 , and long blanket arm 535 along a bottom seam 543 ; and to the long blanket arm 535 along another side seam 544 . the top edge 541 of the arm pouch 540 is left open and is aligned with and slightly below the upper edge 506 of the back panel 500 . in use , an infant &# 39 ; s arms are inserted into the arm pouch 540 as the infant is laid upon the pouch , then the blanket arms 530 , 535 are wrapped in the usual fashion . fig6 shows another embodiment of the present invention in which an arm restraint band 640 is sewn to the short blanket arm 630 along a seam 642 ; to the back panel 600 along a center seam 643 ; and to the long blanket arm 635 along another seam 644 . in use , an infant &# 39 ; s arms are inserted under the arm restraint band 640 on either side of the center seam 643 as the infant is laid upon the band , then the blanket arms 630 , 635 are wrapped in the usual fashion . fig7 shows an embodiment of the present invention with separate arm pouches . a right arm pouch 745 is sewn to the short blanket arm 730 and the back panel 700 , leaving open an upper edge 747 . a left arm pouch 746 is sewn to the long blanket arm 735 and the back panel 700 , leaving open an upper edge 748 . in use , each of an infant &# 39 ; s arms is inserted into an adjacent arm pouch 745 , 746 as the infant is laid upon the back panel 700 , then the blanket arms 730 , 735 are wrapped in the usual fashion . fig8 shows an embodiment of the present invention substantially the same as that shown in fig7 , but with larger arm pouches 845 , 846 . the principles , embodiments , and modes of operation of the present invention have been set forth in the foregoing specification . the embodiments disclosed herein should be interpreted as illustrating the present invention and not as restricting it . the foregoing disclosure is not intended to limit the range of equivalent structure available to a person of ordinary skill in the art in any way , but rather to expand the range of equivalent structures in ways not previously contemplated . numerous variations and changes can be made to the foregoing illustrative embodiments without departing from the scope and spirit of the present invention .
a swaddling blanket to alleviate colic has a back panel long enough to support a child from neck to feet , a leg pouch to loosely contain the child &# 39 ; s legs , arm restraints to hold the child &# 39 ; s arms against and parallel to the child &# 39 ; s torso , a tapered short blanket arm to wrap over the child , and a tapered long blanket arm to wrap around the child more than once from the opposite direction to provide comforting pressure around the child &# 39 ; s arms and torso .