The GEL-DS SKY SPEED 2 is a lightweight trainer for the more efficient runner with a neutral gait and features ASICS most advanced upper technologies for an extremely comfortable fit. Foremost among those technologies is an additional Guidance Line technology that decouples the tooling along the line of progression for enhanced gait efficiency, which helps make the most of the Impact Guidance System (IGS) that employs linked componentry that enhances the foots natural gait from heel strike to toe-off. The Rearfoot and Forefoot GEL Cushioning System eases the shock experienced during the impact and toe-off phases. Strategically placed stretch Biomorphic Fit material on the upper helps to reduce buckling and the irritation associated with it.

I.G.S. (IMPACT GUIDANCE SYSTEM) - ASICS design philosophy in which the individual components of the shoe work together resulting in a more comfortable step and an improved gait.
REARFOOT AND FOREFOOT GEL CUSHIONING SYSTEMS - Silicone-based material placed in critical areas of the sole which dampens shock when the foot hits the ground allowing for a smooth movement through the step and reducing the risk of injury.
SOLYTE MIDSOLE MATERIAL - Spongy layer between the sole and upper designed to absorb shock and cushion the foot. Solyte is a lighter material than SpEVA and EVA and features enhanced durability.
GUIDANCE LINE - Vertical flex groove in the sole which encourages a more efficient running style.
COMFORDRY SOCKLINER - Insole placed inside the shoe which provides cushioning keeping the foot drier and cooler.
BIOMORPHIC FIT UPPER - Stretchy material strategically placed on the upper which reduces bunching when the shoe moves reducing the risk of blisters and irritation.
ASYMMETRICAL LACING DESIGN - Lacing which follows the natural curve of the foot giving a better fit and reducing the potential for irritation.
GENDER SPECIFIC SPACE TRUSSTIC - Lightweight plastic bridge under the arch which gives the shoe strength and stability without loss of flexibility with space which allows for the normal periodic changes in the shape of a womens arch.