The flat base is wider around the heel to help stabilize your foot while you work with weights Overlays around the toe and laces add durability to stand up to the rigors of the gym Support wraps from the heel up to the sides for a snug fit when you tighten the laces Soft foam provides supportive cushioning and rises at the sides to help brace your foot during lateral moves Rubber tread gives you traction from the turf to the training room floor It's thicker under the heel for stability while you lift, and thinner in the front for flexibility during short runs or speed drills Mesh up top lets your foot breathe Directional rubber traction on the side gives you grip on the ropes