Asics Men's Patriot 5 T2g0n 0144 Textile Trainer Textile Synthetic Leather and Mesh Upper - Upper material which is lightweight, comfortable and breathable enhancing performance and fit. AHAR (Asics high Abrasion Resistant Rubber) - Tough material placed in critical areas of the shoe for exceptional durability to help reduce excessive wear. Removable EVA Sockliner - Insole placed inside the shoe for added comfort which can be removed to accommodate a medical orthotic. Trusstic System - A plastic bridge located under the foot arch which provides strength and stability without loss of flexibility. Also helps to control torsion. California Slip Lasting - This upper is stitched around the EVA board and directly attached to the midsole for better stability and ultimate comfort.