The women's GEL-Challenger 9 from ASICS provides exceptional comfort—making this the perfect choice for the hardcore female tennis enthusiast! ; Synthetic leather and mesh upper materials provide enhanced breathability and flexibility. Padded collar and tongue. P.H.F. (Personal Heel Fit) —two layers of memory foam line the collar and mold to the athlete's heel—creating a personalized fit. Removable EVA insole. Traditional lacing system for optimum fit. PGuard Toe Protector for enhanced toe durability. Solyte midsole material—a lighter weight midsole compound than ASICS standard EVA and SpEVA—for enhanced cushioning and durability. 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. A hidden Trusstic System reduces the weight of the sole unit while retaining the structural integrity of the shoe. AHAR (ASICS High Abrasion Rubber) placed in critical areas of the outsole for exceptional durability. APMA Seal of Acceptance. Imported. Measurements: ; Weight: 12 oz ; Product measurements were taken using size 7.5, width B - Medium. Please note that measurements may vary by size.