If it has to roll and slide, then you need these tough roll buckles!
A role buckle is a super smart buckle. Because the roller makes latex, textile or leather go through the buckle effortlessly and smoothly. Latex in particular sometimes wants to be a bit rough on belts and straps. You will not be bothered by roller buckles.
The sizes mentioned are the inside dimensions / transit dimensions.
Tip!
If it is going to be pulled, it is useful to reinforce the latex that you are going to pull through the buckle, with a strip of twill strap and of course also for the possible eyelets / nests that you may be placing.