Clamp for keeping smoker bellows closed

This thing is made to be able to close the bellows of a smoker used in beekeeping while the smoker is not in use.

The sides of the bellows are made of leather and if the folds are kept open when the device is not used, they might bend outwards when used and the bellows don't work too good if that happens.

The opening between is 28mm at the end points and would be 30mm at the base without the curved corners.

I printed mine with Ultimaker2 with 33% infill and approx high quality set