In line with tradition, the ASICS GEL-Noosa Tri™ 11 continues to be the lively, energetic running shoes that fans expect. This newest version features a lighter weight along with an updated upper design and fresh colors. Neutral runners to overpronators will benefit from quick transitions and comfortable sockless wear.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.