LOCK LACES provide stretch fit comfort and locked in safety for all sports and casual use. LOCK LACES are a necessity for runners and triathletes improving performance and transition times. LOCK LACES are one size fits all. LOCK LACES are 48 inches in length. Because they are elastic, LOCK LACES can stretch to 72 inches in length. LOCK LACES provide convenience and safety for all sports. LOCK LACES are a necessity for runners and triathletes improving performance and transition times. With LOCK LACES you never have to stop play to tie unruly laces. Wear LOCK LACES with all styles of running shoes, athletic shoes and casual lace up shoes for any desired use. With LOCK LACES you can simply slip your shoes on and off, no more tying and untying laces or double knots! When using LOCK LACES you never have to stop to retie your laces during any race, sport or activity.