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 and soft cushioning with high energy return and ample shock absorption and 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 and Lightweight Q:Foam with density calibrated to a woman's body mass and gait and Full-length Re-zorb responsive heel cushioning for shock absorption. Materials: Breathable engineered mesh and low-profile padded tongue and padded heel and high-abrasion collar lining for longer wear and breathable linings with anti-odor treatment and molded heel stabilizer. Closure: Lace-up front with SecureFit lacing system to enhance fit and reduce friction and pull tabs for easy on and off. Insole: Anatomical insole for arch support and heel support. Midsole: Lightweight Q:foam and Full-length Re-zorb responsive cushioning. Outsole: Rubber sole with flex during acceleration and textured surface for traction and molded Sgs stability shank to promote stability and reduce pronation and Asf (Absorb/Support/Flex) technology. RYKASHIELD 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 Ryka 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.