Hybrid nylon ripstop and stretch-knit PU fabric construction for easy don and doff Low profile, fully insulated construction patterned for use inside of stockingfoot waders in cold water conditions Stretch knit collar and microfiber outsole for comfort and durability Sizing: XS (Men's 6-7, Women's 7-8) S (Men's 7-8, Women's 9-10) M (Men's 9-10, Women's 11-12) L (Men's 11-12) XL (Men's 13-14)