Tesla CLSL TF-E621-BLK_285 Men 10.5 D(M) Men's Lightweight Sports Running Shoe E621 For a more comfortable fit we recommend going up half a size. Provides the bare minimum in protection and the closest feel to truly running barefooted. Quick-dry function : Integrated vent-mesh upper design maximizes the surface area and keeps your feet dry and cool. Flexible movement- Flex groove sole with hydro-grip outsole provides excellent traction and stability for all surfaces and terrains. Dura glide : Optimal formulation of thermoplastic polymer with advanced technology for less stiffness but more sturdy EVA midsole.