Under Armour Assert II Women's Running Shoes mesh Full-Length Micro G Foam - Turns cushioned landings into explosive take-offs. Padded MPZ Tongue - A great modular protection zone desgined to help protect the upper of your foot from abrasion. Moulded 4D Foam Sockliner - Conforms to your foot's exact shape, eliminating slippage. TPU Heel Counter - For greater stability without being too rigid for comfort. Solid Rubber Outsole - For the perfect balance of grip and durability.