Using this D'Addario Auto Lock Guitar Strap is easy. First, adjust the strap to your desired length between 43 and 55 inches. Then, slide the strap end over the guitar strap buttons on your electric, acoustic, or bass guitar. The grey spring - loaded latch will automatically clamp down, locking the strap in place. When you want to remove the strap, just push up on the grey latch and slide off the end. Be aware that although it works with most strap buttons, it may not work with all designs, especially end pin jacks or plastic strap buttons. To keep your strap in good condition, clean it regularly with a soft, dry cloth. Avoid exposing it to extreme heat, cold, or moisture as this could damage the leather and the locking mechanism.