A supporting device for a stringed instrument, for example a guitar, comprises: a cradle portion for spanning the bottom side of the guitar body; a wrap portion for extending over the top side of the guitar body opposite the cradle portion and for being connected to the cradle portion for securing the cradle portion against the bottom side of the guitar body; and a strap portion extending between a first end for connection to the cradle portion opposite the guitar neck and a second end for connection to one of cradle portion or the wrap portion adjacent the guitar neck such that the body is suspended by the strap portion. The cradle portion, wrap portion and strap are formed of soft material without any fasteners required so as not to damage the instrument.