The 10th anniversary of ASICS GEL-Noosa Tri™ 10 running shoes bring you a lighter weight and quicker toe-off. The sleek new upper design keeps with the tradition of a bright and busy design, but adds a seamless construction for enhanced comfort during sockless runs. Ideal for slight underpronators, neutral runners and moderate overpronators.Upper: Seamless Construction reduces the potential for irritation and friction caused by traditional stitches and seams. Heel and tongue grips make the shoes easier to pull on and off. Elastic laces allow the runner to put the shoes on quickly, easily and securely.Midsole: Impact Guidance System (I.G.S®) employs linked componentry to enhance the foot's natural gait from heel strike to toe-off. Rearfoot and Forefoot GEL® Cushioning Systems attenuate shock during impact and toe-of phases, and allow movement on multiple planes as the foot transitions through the gait cycle. Dynamic DuoMax® Support System enhances stability and support, with reduced weight and increased platform comfort. Solyte® Midsole Material is a lighter weight midsole compound than ASICS EVA or SpEVA® and features enhanced cushioning and durability. Propulsion Trusstic® mimics connective tissue in the foot by creating tension as the foot enters the propulsion stage. Perforated Sockliner.Outsole: Guidance Line® vertical flex groove decouples the tooling along the line of progression for enhanced gait efficiency. WET GRIP® Outsole is made from a special blend of organic and non-organic components, designed to enhance traction even on wet surfaces. AHAR® ASICS High Abrasion Rubber placed in critical areas of the outsole provides exceptional durability.