Luigino Barefoot Booties can be worn with quad, inline, ice boots and/or cycling shoes.Features & Benefits:Neoprene outer with a soft absorbing inner2mm allows a more snug fitting bootExcellent barefoot replacement Improved comfortReduced blisters (for some eliminate altogether)Easier Break-in on new bootsBetter longevity of your boots (vs. using barefoot)Increased performance over socksSkate with Barefoot Booties and feel like 1 with your skate/shoe!SIZE CHART:SMALL 2-5MED 5-8LARGE 8-11XL 11-14