... heat. Item YKSK002Descriptio 4.0mm Neoprene Super Stretch Socks with Kevlar soleMaterial Neoprene, Nylon, KevlarSize S,M,L,XLFeatureKevlar on the bottom ... place you need warm feet,it can provide the athlete with extra traction, minimizing accidents. 4. Glued and blind stitched seams ... in all but over-the-sock submersion 5. Can print with you logo and OEM is welcome