Tying your shoes is a thing of the past with the unique loop system and high-impact lightweight plastic cordlock. No more tying, retying, double knots or frazzled dirty laces to mess with. Just slip on your shoe and pull to tighten. Innovative curved tips of the laces allow the wearer to lace their shoes more easily through the increasingly weird eyelet configurations in athletic shoes. The lock is a slidable and spring activated device. The locks are made from a strong, durable and lightweight plastic. Includes 2 plastic cord ends for easy grasp when adjusting. Lacing instructions included. Fits up to size 12 Mens shoes. Includes 1 pair of laces, 2 cord locks, 2 cord ends. Weight: 1 oz per pair. Laces 40" inches in length but stretch to 60".