The Nike Air Max Bella TR 4 combines the bounce and beauty of Max Air cushioning with a flat sole that lends a stabilizing advantage while you tone and sculpt with weight. With a more traditional sneaker design, you can get a perfect fit. Updated support around the sides helps keep your foot secure during strength workouts. Contoured Containment Redesigned support at the midfoot integrates with traditional lacing to help you dial in a more secure and snug fit that doesn't slack. Synthetic leather wraps the heel for added support. Steady Comfort The foam and Max Air unit in the heel bring stability and high-performance cushioning to every step. The raised edging braces your foot during side-to-side movement. Smart Traction The flat sole helps keep you stable on gym surfaces while the rubber tread gives you more grip.