PUMA Women's Ignite Ultimate Running Sneaker 100% Fabric/Synthetic Imported Rubber sole Three-layer mesh upper for breathability and comfort. Lace closure for a snug fit. Silicone print at inner heel to secure foot and eliminate slippage. Molded EVA sockliner hugs the arch. EverTrack rubber for durability in high-wear areas of outsole. Midsole featuring IGNITE Foam, PUMA's proprietary material with exceptionally responsive, energy-returning qualities to help make you faster Articulated flex grooves at midsole compress and rebound to provide energy return Forefoot flex grooves at outsole provide a smooth transition and toe-off. Transition line along the bottom of the shoe mimics your natural gait pattern for a smooth ride