The toggle system uses a super easy pull-and-release closure so your kiddo can quickly tighten the kicks with 1 hand. Supersoft cushioning underfoot is lightweight and responsive to help little feet run and play confidently with every step. Rubber on the front of the outsole provides durable traction across multiple surfaces. It also contains some Nike Grind recycled rubber. Soft mesh is lightweight and breathable to help your feet stay cool with every move. Plastic clip around the heel helps provide stability for multidirectional moves. Foam cushioning around the collar gives extra ankle comfort.