ASICS Women's GEL-DS Sky Speed Running Shoe 100% Synthetic and mesh Rubber sole Impact Guidance System (I.G.S.) (RUNNING) ASICS Design Philosophy. Employs linked componentry that enhances the foot's natural gait from heel strike to toe-off. Asymmetrical Lacing Design An anatomically correct lacing environment that reduces potential for irritation and provides improved comfort and fit. Guidance Line You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!