UA Surge 4 Running Shoes Unisex Juniors. These shoes are designed to be cushioned, comfortable, light, and breathable, perfect for when you never slow down. The mesh upper regulates temperature for comfortable runs. Enhanced cushioning around the ankle collar provides support to help you achieve your personal best. The cushioned EVA midsole offers responsive energy return without added weight. Strategically placed rubber pods ensure durability. These trainers are made with a textile and synthetic upper, and a rubber and EVA outsole.