Vac's originated and designed this foam center leg wrap over 25 years ago and gave it the name "No Bow Wrap". It continues to be the most popular wrap on the market today. Both sides are super soft absorbent fleece fabric with a center of dense sponge-like foam. Vac's exclusive stitching keeps foam from bunching up. This soft pliable leg wrap contours to leg for custom-like fit and will not slip.