ASICS Women's GEL-Resolution 3 Tennis Shoe 100% Synthetic and mesh Rubber sole P.H.F. (Personal Heel Fit) 2 layers of memory foam line the collar and mold to the athletes heel, creating a personalized fit. Rearfoot and Forefoot GEL Cushioning Systems Attenuates shock during impact and toe-off phases, and allows movement in multiple planes as the foot transitions through the gait cycle. Impact Guidance System (I.G.S.) (MULTI-SPORT)