I purchased this for an adult.  The straps were too thin; about 1/8" wide elastic if that wide.  When I'd hold the googles in my hands, they appeared to be made of low quality plastic and created for a child designed only to last a short time.  The band which fastens around the head was so flimsy that we couldn't use it.  We ended up not using the googles at all.  I have to chalk it up to a lesson learned.