Collapsible car holder for wet umbrellas

Update: Second, smaller version uploaded!

Both versions of the holder are printed in one piece each. The first version is 10 cm high on the print bed and has an inner diameter of at least 8 cm. When unfolded, the holder consisting of four elements has a height of 33.5 cm and thus fits very well for most folding umbrellas. 
The second version has the same height but a smaller minimum inner diameter of only 7 cm. Also, this second umbrella holder consists of only three elements and has a much smaller outer diameter, as well as a height of only 26 cm when fully extended.

With a tension belt or buckle strap (maximum width 20 mm), the umbrella holder can be attached to the headrest of the passenger seat, for example. If you then get into the car with a dripping wet umbrella, you can quickly put it down without the car getting unnecessarily wet.

If you do not need the holder on a sunny day, you can store it folded in the trunk. The smaller version also fits in a normal sized cup holder or, at least in my car, in the tray in the car door, even collapsed.