The proper balance of stability cushioning and overall durability in a designed to last running shoe Lightweight breathable mesh upper Cushioned insole Concave rubber sole acts like a trampoline to soften impact stabilize the heel and provide increased energy return Cantilever design centers the heel over the concave sole Anatomical Cradle Holds the body s natural cushioning elements firmly in place in the heel to maximize cushioning Dura Ryd in the forefoot and heel provides additional shock absorption at key impact areas More details about product A2052