Luigino Barefoot Booties can be worn with quad, inline, ice boots and/or cycling shoes. Features &amp; Benefits: Neoprene outer with a soft absorbing inner 2mm allows a more snug fitting boot Excellent barefoot replacement Improved comfort Reduced blisters (for some eliminate altogether) Easier Break-in on new boots Better longevity of your boots (vs. using barefoot) Increased performance over socks