This is a first draft of a cap cover for the Cheeki brand stainless bottle screw cap.

It has cutouts for the carry handle on the cap, and some just-big-enough ridges on the bottom edge to snap fit.

Just a practice object to learn blender, so the geometry isn't particularly clean.

Could be used to colour code caps if you have more than one, or to integrate text or a design to personalise your bottle.