Women's Ryka Utopia Run Sneakers Feel strength and support for every run in these womens running shoes with new performance technology and standout support. BEST FOR: Performance running with neutral cushioning. PERFORMANCE TECH: ASF™ (Absorb/Support/Flex) technology to support each phase of a runner’s stance + CradleFit™ technology to increase foot contact and promote natural ball position. MATERIALS: Breathable engineered mesh, reflective spots on forefoot, + padded tongue and collar. CLOSURE: SecureFit™ lacing system to enhance fit + reduce friction. INSOLE: Premium anatomical Ortholite cushion with moisture-wicking, anti-odor lining. MIDSOLE: Lightweight foam with density calibrated to a woman’s body mass and gait + Full-length RE-ZORB® responsive heel cushioning for shock absorption. OUTSOLE: Rubber sole with flex during acceleration + Textured surface for traction. WEIGHT: 280 g/9.8 oz per shoe. HEEL-TO-TOE DROP: 8 mm.