With ample comfort and support, Ryka Achieve aerobic and fitness shoes are designed for multi-directional movement. These appropriately named shoes will help you reach your fitness goals thanks to ample shock absorption and lateral stability. Active ladies will love the sleek look and flexible feel.Upper: Ultra-thin Flex-Foil welded overlays provide lightweight structure. Padded tongue and heel collar enhance comfort. Mesh offers breathable flexibility. Lace-up front offers an adjustable fit.Midsole: N-Gage® Cushioning blend of high-grade EVA foam and premium rubber provides lightweight cushioning, shock absorption, and rebound. I.H.G.™ (Infused Heel Guidance) provides extra lateral stability support to secure the heel and guide foot strike alignment. RE-ZORB enhances natural movement. Outsole: Solid rubber traction outsole. Forefoot pivot point facilitates agile movement.