Asics Ladies Gel DS Trainer 16 Shoes: Of all our iconic running shoes the GEL-DS TRAINER is one of the most revered models. It is a stand alone in the market place-and fans absolutely swear by it. The GEL-DS TRAINER is super lightweight with outstanding cushioning and stability characteristics. The new GEL-DS TRAINER 16 features a wet grip rubber outsole that improves traction while delivering a very responsive but comfortable ride to the wearer. If youre looking for a race shoe to substitute for your GEL-KAYANO or GT-2000-series high mileage training the GEL-DS TRAINER is a great option. In saying this it is also a great stand alone lightweight trainer for those over-pronators doing fast paced training sessions. Impact Guidance System (I.G.S.) - Asics Design Philosophy. Employs linked componentry that enhances natural gait from heel strike to toe-off. Heel Clutching System - Exoskelatal heel counter provides improved support and creates improved heel fitting environment. Asymmetric Lacing System - An anatomically correct lacing environment that reduces potential for irritation and provides improved comfort and fit. Wetgrip Rubber Sponge - Material made from a special blend of organic and non-organic components designed to enhance traction even on wet surfaces. Duomax Support System - A dual density midsole system positioned to enhance support and stability positioned sport specifically. Comfordry Sockliner - Provides cushioning performance and anti-microbial properties for a cooler drier healthier environment. Biomorphic Fit Upper - Stretch material strategically placed on the upper helps to reduce buckling and the potential for irritation. Wet Grip Rubber Outsole - An outsole made from a special blend of components designed to enhance traction - even on a wet surface. Personal Heel Fit (P.H.F.) - 2 layers of memory foam line the collar and mold to the athletes heel creating a personalized fit. Guidance Line - Vertical flex groove decouples the tooling along the line of progression for enhanced gait efficiency. Space Trusstic System - This midfoot stabiliser creates a pocket between the Trusstic System device and the midsole allowing for controlled midsole deformation and more efficient foot function.