Ryka - Intensity XT (White/Flint/Thunder Cloud) - Women's: A versatile trainer with full foot cushioning, shock absorption and a wide base of support. Leather and mesh upper for breathable comfort and support. Forefoot and rearfoot Cushioning Cartridge for durable cushioning, rebound and shock absorption. Rearfoot Ryka Engage(R) for additional rearfoot cushioning. Midfoot TPU shank for arch support and stability. Removable, molded Nitracel sockliner. Durable rubber outsole.