All the bathtub it does not cover but since our Schmusn in the big tub and not bathe alone, that's totally ok. She sucks very well fixed, not slipping and slipping is also not present in the material. For the baby bath I have ever taken. Every now and then I glue them sometimes on the wall (if no hooks or straps is free). ^^
Practically, of course, the hole for hanging. So they can dry thoroughly.
I remember, however, that the mat has initially smelled strongly of rubber that gives itself over time.