CERO 3D Printed Unisex Buckles No-Tie Closures Shoes lace Holder for Sneakers Without Tying and Knots (Black PLA Plastic). Durable, Light Weight, Black 3D Printed PLA Plastic. Quick and easy Fasten and Unfasten Shoes. Designed for Sports Shoes, Casuals and Formal Shoes. ERGONOMIC DESIGN. Can be used by Adults and Children.