Premium performance takes our powerful Made for Women technology to the next level in these innovative women's running sneakers. BEST FOR: Performance running. APMA APPROVED: Awarded the American Podiatric Medical Association Seal of Acceptance for products that promote good foot health. PERFORMANCE TESTED: Proven in lab testing for performance running and walking with exceptional cushioning and acceleration resulting in a smooth ride + soft cushioning with high energy return and ample shock absorption + subjective comfort/cushioning/ride/impact scores as good as or higher than competitive benchmarks. INNOVATIVE TECH: ASF™ (Absorb/Support/Flex) technology to support each phase of a runner's stance + Lightweight Q:Foam with density calibrated to a woman's body mass and gait + Full-length RE-ZORB® responsive heel cushioning for shock absorption. MATERIALS: Breathable engineered mesh + Low-profile padded tongue and padded heel + High-abrasion collar lining for longer wear + Breathable linings with anti-odor and anti-microbial treatment + Molded heel stabilizer. CLOSURE: Lace-up front with SecureFit™ lacing system to enhance fit and reduce friction + Pull tabs for easy on/off. INSOLE: Anatomical insole for arch support + heel support. MIDSOLE: Lightweight Q:foam + Full-length RE-ZORB® responsive cushioning. OUTSOLE: Rubber sole with flex during acceleration + Textured surface for traction + Molded SGS stability shank to promote stability and reduce pronation + ASF™ (Absorb/Support/Flex) technology. RYKÄSHIELD STAIN PROTECTANT: Product works by best by cleaning immediately after a spill by running cold water over the shoe. Use only cold water to remove the following stains: dirt, mud, coffee, ketchup, blood. Do not wipe the shoe with any product, including water, as it can cause the stain to be absorbed into the material. Results may vary and Rykä does not guarantee that this product will work to remove any and all stains, particularly after repeated use. WEIGHT: 286 g/10.1 oz per shoe. HEEL-TO-TOE DROP: 8 mm.