Measuring the strap from button hole to button hole (that is, where the strap buttons would attach). It is adjustable from 30 inches to 55 inches. It should be adequate for most guitars, basses or ukuleles. It may not be long enough for Jumbo Body acoustics, like the J-200 or large bout Jazz guitars. It would not be long enough for square neck resonator guitars (for example, a Dobro) if you were attaching at the headstock and tailblock. I have found few straps that work in those applications.