Caterpy Laces - The Ultimate No Tie Shoelaces 77% nylon, 11% rubber, 10% Silicon, 2% Acetate Pull On closure Lace up once and never tie again, no extra hardware needed Adjust customized tension between each eyelet for different feet shapes Elasticity allows shoes to expand and contract with natural feet movements Avoid pressue points caused by knots or plastic hardware Transform shoes into slip ons while keeping consistent tension You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!