New Balance MT00-Black Blue-M: US 7 / UK 6.5 / EU 40 75% Synthetic/25% Mesh Vibram sole VIBRAM - Outsole designed for lightweight traction and great durability Zero Drop - Zero height difference between heel and forefoot, ideal for the neutral runner who wants to take control of the road. Odor-Resistant - Treated material which prevents odors from breeding, without or without socks.