ASICS GEL-Blast™ 6 indoor, squash, racquetball shoes deliver incredible durability, especially for squash and handball players. The Impact Guidance System makes moving across the court much easier for quick cuts and lateral movement. Stylish players will love the vivid colors and low-profile design.Upper: PGuard Toe Protector enhances toe durability and protection. Flexion Fit® provides form fitting comfort without sacrificing support. Lace-up front provides an adjustable fit. Padded tongue and heel collar enhance comfort.Midsole: P.H.F.® (Personal Heel Fit) provides 2 layers of memory foam that line the collar and mold to the athlete's heel, creating a personalized fit. Rearfoot and Forefoot GEL® Cushioning Systems attenuate shock during impact and toe-off phases, and allow movement in multiple planes as the foot transitions through the gait cycle. SpEVA® Midsole Material improves bounce back characteristics and decreases midsole breakdown. Trusstic System® reduces the weight of the sole unit while retaining the structural integrity of the shoe. Impact Guidance System (I.G.S®) employs linked componentry to enhance the foot's natural gait from heel strike to toe-off.Outsole: NC Rubber® Outsole compound contains more natural rubber content than traditional solid rubber, resulting in enhanced traction on court surfaces. WET GRIP® Outsole is made from a special blend of organic and non-organic components, designed to enhance traction, even on wet surfaces. Non-marking outsole.