Flexible Fit - Elastic silicone provides a flexible fit, providing a comfortable fit for most sizes of shoes. The elastic design allows them to safely upgrade your sneakers. Feeling more comfortable, you can focus more on life and work.Size: 4.1-7.2cm,Fabric simulation, with a delicate texture. Smooth footwear enhances your confidence and helps you achieve a better careerAfter testing, elastic shoelaces have been found to be durable and particularly suitable for children, elderly parents, or those who find it difficult to tie shoelaces. Used for sports shoes, board shoes, sandals, casual shoes, etc.