Padded collar and tongue. Lace-up closure for a snug and custom fit. Extended Flexion Fit® forefoot and synthetic leather midfoot brace for improved stability. PGuardâ"¢ Toe Protector for enhanced toe durability. P.H.F.â"¢ (Personal Heel Fit) offers two layers of memory foam line the collar and mold to the athlete's heel, creating a personalized fit. Solyte® Midsole Material provides a lighter weight midsole compound than ASICS' standard EVA and SpEVA®, while offering enhanced cushioning and durability. Removable insole. 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. Trusstic System® reduces the weight of the sole unit while retaining the structural integrity of the shoe. ASICS® High Abrasion Rubber is placed in critical areas of the outsole for exceptional durability.