Tackle your most intense workouts in the Nike Air Max Alpha Trainer 4. The wide, flat base with Nike Air cushioning gives you comfortable stability for lifting. The heel is redesigned with supportive padding that helps take a load off your heaviest sets. Everything comes together in a durable shoe built for the rigors of the gym. Reinforced to Support The heel wrap meets the laces at the midfoot for support during explosive moves. Durable mesh, tough eyestays and overlays let your foot breathe while standing up to the demands of everyday training. Cushioned for Comfort Foam with a Max Air unit at the heel cushions your foot for comfort that lasts as long as you do. The collar pads your ankle from one move to the next. Sturdy Foundation The flat, wide sole with rubber tread gives you stability and traction. Rubber wraps up the side to keep your foot firmly on the sole during lateral movement.