This foam boot provides coverage for instep and ankle. Open bottoms help prevent slippage. Vinyl strip across ball of foot, along with velcro closure around ankle ensures a good and proper fit. Top ventilation for added comfort. Unique crescent moon cutout at achilles for better flexibility and heat control. Color: Black, Red, White, Blue, Pink. Size: CHS, CHM, CHL, S, M, L, XL.