Under Armour FTHR Shield TRC Storm Running Shoes Synthetic-and-mesh UA Storm Tech Fabric - P2i technology designed to repel water. Synthetic Overlays - Provide the shoes with a solid construction whilst eliminating the bulk of extra fabric. Padded MPZ Tongue - Protects The foot from abrasion. Molded 4D Foam - Footbed conforms to your foot's exact shape, eliminating slippage. CompFit Sleeve - Designed to provide the runner with a snug supportive.