ASICS GEL-Solution Speed 2 tennis shoes are nimble and light for incredible all-court performance. The Flexion Fit™ upper provides form-fitting comfort that doesn't sacrifice support. Move confidently about the court with a PGuard™ toe protector that keeps your shoes stronger longer.Upper: Padded tongue and heel collar enhance instep comfort. Lace-up front offers an adjustable fit. Breathable mesh delivers flexibility. Flexion Fit™ provides form-fitting comfort without sacrificing support. PGuard™ Toe Protector designed to enhance durability.Midsole Rearfoot and forefoot GEL® Cushioning Systems attenuate shock during impact and toe-off phases, allowing movement in multiple planes as the foot transitions through the gait cycle. Impact Guidance System (I.G.S.®) design philosophy employs linked componentry to enhance the foot's natural gait. Personalized Heel Fit (P.H.F.) memory foam supplies 2 layers of memory foam in the collar and molds to the athlete's heel, creating a personalized fit. Solyte® compound is lighter than standard EVA and SpEVA®. Removable insole.Outsole: Non-marking outsole. AHAR® High Abrasion Rubber placed in key areas of the outsole provides exceptional durability.