Strap locks are devices used to secure guitar straps to the instrument, preventing them from accidentally slipping off during play. They typically consist of a locking mechanism that attaches to the strap and a corresponding piece that connects to the guitar. This ensures that the strap remains firmly in place, allowing musicians to perform without worrying about their instrument falling. These locks are especially popular among guitarists who perform live, as they provide added security and peace of mind. Various brands offer strap locks, each with unique designs and features, but their primary function remains the same: to keep the guitar securely attached to the strap.