SDX3 Indoor Court Squash Shoes Gum Rubber Sole The contoured outsole is made from non-marking gum rubber, resulting unbelievable grip and stability The inner lining is reinforced with Dri-Lex moisture management mesh fabric keeping the foot dry and comfortable, and blister resistant High performance "phylon" EVA midsole, well known for impact cushioning and comfort. The Z-Tech sock liner helps reduce heel strike shock to the body One-piece toe box construction eliminates stitching over and around toes, reducing friction and irritation to the toes caused by traditional layered stitching Traditional low profile, maximum reactivity with the court, resulting in rapid, secure, and safe footwork.