Unleash your power in these comfortable running shoes designed to deliver next-level support and energy return for HIT workouts or daily runs. BEST FOR: Running + Training & gym. PERFORMANCE TESTED: Proven in lab testing for soft cushioning and high energy return ideal for every runner looking to train in comfort + smooth experience for your run stride + above average subjective scores for ride and heel cushioning. RYKÄ Q TECH: Built for a woman's quadricep muscle Q ANGLE with a narrower heel, roomier toe + contoured cushioning for stability. MATERIALS: Breathable engineered mesh upper with hung lining + padded tongue and heel collar + durable molded heel overlay + partially recycled linings and internal components. CLOSURE: Lace up. INSOLE: Anatomical insole for arch + heel support and partially recycled EVA. MIDSOLE: Lightweight Q:Foam for soft cushioning and high energy return + Full-length RE-ZORB LITE® responsive cushioning. OUTSOLE: Compression molded rubber with decoupled molded heel and arch support pod. WEIGHT: 254g/8.9oz per shoe. HEEL-TO-TOE DROP: 9mm.