Its surface is usually cut or looped pile that may be quite thick and plush. The color range is wide and shapes vary, but most are rectangular or oblong. There are two types of Bath Mats, one is placed inside the bathtub and the other is placed just outside it. The first is used to prevent slipping in the tub, while the second absorbs water from the body after the bath or shower and helps prevent slipping as well as water damage to the floor.