ASICS GEL-KAYANO 17 Running Shoes *UPDATED* Space master UV - ASICS innovative upper material technology. Construction of we *UPDATED* Asymmetrical Lacing system - A lacing system the follows the natural curve of th Decoupled Heel - Addresses shearing forces at heel strike. *UPDATED* AHAR+ - This is a thinner and lighter version of ASICS High Abrasion Rubber. It Space Master UV - Added to tongue, creating a more effective moisture.