The Gel-Kayano® 13 continues to offer the ultimate blend of support and cushioning that the series is known for. All the fit and comfort features return as well, with the added benefit of new hi-tech upper materials and an expanded GEL® cushioning system. The Kayano 13 offers Impact Guidance System(I.G.S.) which enhances the foots natural gait from heel strike to toe off. Solyte Midsole Material which is lighter than ASICS' standard EVA and SpEVA, combined with improved cushioning and durability. Also has the Space Trusstic System which creates a pocket between the Trusstic System device and the midsole, allowing for greater midsole deformation and more efficient foot function. GEL Cushioning Systems along with the DuoMax Support System create the perfect balance between support and cushioning. The Kayano 13 is truly a state of the art running shoe.