Jet - Bruiser ラージ リッジド バットプラグ 7.5"

The ridges feel incredible once you get past the initial stretch, and that flared base really does stick firmly to the shower tile. I've used it a few times now and it's easy to clean, which is a huge plus for me.

The suction cup base is genuinely sturdy and stuck to my shower wall without slipping, which made hands-free use way easier than expected. Only gripe is the PVC has a slight plastic smell right out of the box, but it faded after a wash. For the size, it's a solid buy.