Easy on/off, flexible AND no laces required? Yes, please. The Nike Dynamo Free slips on and off quickly, plus helps keep little feet cushioned and stable. Play time is now anytime. Durable Design Synthetic leather and fabric combine with wavy rubber for a durable design that provides stability and support. The rubber toe tip adds extra durability where kiddos need it most. Flexible Comfort Soft, cushiony foam is super flexible so every growing step feels natural. No Laces Needed The slip-on design makes these kicks easy to take on and off.