NIKE Men's Free Trainer 5.0 V6 Running Shoes Synthetic-mesh Imported Rubber sole Breathable mesh upper keeps feet cool, while welded flex zones allow a full range of motion while training and lifting. Internal support structure holds your foot in place, keeping your form strong. Flexible hexagonal pods in the midsole allow for multidirectional movement. Rubber outsole with traction pattern for durable grip on multiple surfaces. By Nike