Air-Cooled MF, Goodyear Rubber, Heel Pillow, Machine Washable, Max Cushioning, Natural Rocker Technology, Slip-Ins, Ultra Go. Take comfort to the next level with Skechers Hands Free Slip-ins®: Max Cushioning® Premier 2.0 - Advantageous 2. Designed with our exclusive Heel Pillow™,this performance slip-on features an engineered knit upper with ULTRA GO® cushioning, a Skechers Air-Cooled Memory Foam® insole, and a Skechers MaxCushioning® platform midsole - all on a durable Goodyear® rubber outsole.