With over 100kg, I value of stability. The stool stands legs apart and stably without to twist under load. As another reviewer has noted, the seat surface is smooth and is in a wet state is not for it to climb without risk. For infirm or people who use the stool as sports equipment that may be a criterion. Since I use the stool in the shower, it is also important for me that there is no winding places where dirt or water can collect.
The reported pre-reviewers problem with the hard to be detached sticker seems solved. The stickers can be removed without residue within 5 seconds.