Abstract: A golf bag unit has extendable and retractable traveling wheels and comprises a tubular body (1) carrying a mounting device (2), to which is pivotally attached a pair of support legs (3), each with a traveling wheel (4), a bag (5) of flexible material coaxially surrounding the tubular body (1) and having a bottom support plate (6) for golf clubs, a pair of link arms (7) pivotally connecting with an actuation sleeve member (8), which is slidably movable on the tubular body (1), a compression spring (11) connected with said sleeve member (8), a control rod (12), which provides for a manual compression of the compression spring (11) during retraction of the wheel-carrying support legs (3) and a subsequent automatic extension of said legs (3) to the traveling position, a support ring (15) and a ground support foot (13).