Unisex Active Insoles Contoured, flexible support cradles your feet with targeted cushioning that improves your athletic performance and prolongs the life of your shoes. Ideal for walking, running, training and sports. Product Details Benefits Include: 4-Way Stretch Fabric with Silpure Antimicrobial helps prevent blisters while controlling odor. SpenCore Material: a layer of this material absorbs shock and impact to provide intense comfort and cushioning. Lightweight POLYSORB Polyurethane Foam provides heel cupping and contoured arch support. Sizing: For half sizes order the next size down. Specifications: Materials: PU Style: 38-385