Bathtub Mats No-suction Have You Ever Seen A Bathtub Mat W/O Suction Cups On The Bottom Of It?

Have you ever seen a bathtub mat W/O suction cups on the bottom of it? - bathtub mats no-suction

I painted my bathtub and the man who tells about the type without the cups. I saw many places and can not find such a thing. If you saw where you are? Thank you!