From Skechers, the Women's Hands Free Slip-Ins SKX Aero Burst Sneakers feature: Breathable engineered mesh upper Skechers Hands Free Slip-ins® molded heel panel for an easy fit Heel Pillow™ holds your foot securely in place Patented Skechers Arch Fit® removable insole system with podiatrist-certified arch support, developed with 20 years of data and 120,000 unweighted foot scans HYPER BURST ICE™ cushioning features dual-density HYPER BURST® technology for a soft and stable run Carbon-infused H-plate delivers exceptional stability and energy return with an ultra-high stiffness-to-weight ratio Skechers HYPER ARC® adapts to your running stride to promote a smoother transition from landing to toe off Goodyear® Performance Outsole delivers enhanced traction, stability, and durability Approx. 9.8 oz./278 g weight This design has been granted the Seal of Acceptance by the American Podiatric Medical Association (APMA) Machine washable Imported.