This is just like the shower base, but it has a seat in the corner of the shower base that is placed in the other side where the drain is the placed. This will help you to relax while showering in your bathroom. You can be more relaxed in the bathroom after a long day of working. The various Kohler 5 shower inserts that can be inserted with your bathroom are the shower bases that can be inserted under the shower faucet. This basically is just like the bathtub but only for the base that consists of drain. The other inserts is the bases with seat. Bathroom.