Under Armour Trainers Surge 4.0These shoes are going to feel cushioned and comfortable, but also light and breathable. Why? Because when you never slow down, that's what you need. Specification These shoes are going to feel cushioned and comfortable, but also light and breathable. Why? Because when you never slow down, that's what you need. Fabric UPPER: 98% Textile,2% Synthetic. OUTSOLE: 50% Rubber,50% Ethylene Vinyl Acetate (EVA) Size 7 (US8) 41 8 (US9) 42. 5 9 (US10) 44 10