The D’Addario Auto Lock padded guitar strap is a simple integrated strap locking system—slide the strap end over the guitar strap buttons and you’re all set. The grey latch is spring-loaded, so it automatically clamps down on the strap button and will not release until you want it to. To remove, just push up on the grey latch and slide off the end. The Auto Lock padded guitar strap is compatible with most strap buttons available.