Extensible shoulder straps adaptable to any soundhole guitar. It has 2 plastic hooks that fit in the mouth of the guitar without damaging it to be able to hold it for practical use. - Simple to regulate. - Confortable to use. - Easy to clean. - Resistant. - Black colour. It's made of black nylon. 40mm width It can be used to classic guitar, 3/4, 1/2, etc... Also for lute.