COLOR MARK― There is a color mark on the suction cups of the bathroom handle, which displays in green to indicate that the handle is well adsorbed; if it is red, it means the handle is not pressed firmly and there is air under the suction cup, which will cause the shower handle to slip. Please be sure to pay attention to the marks when installing the handle. DURABLE & NON-SLIP― The handle is made of ABS plastic material, which is durable and wear-resistant. Heavy-duty suction cup design works on all non-porous surfaces including smooth tile, glass and porcelain. EASY TO USE― Place the tub grab bar on a wall surface clean, smooth and non-porous, then open or close the suction cup locks on both sides, you can easily complete the installation or removal of the handle. NO DRILLING & SUCTION CUP DESIGN― This handle with suction cup is removable and can be reinstalled without tools or drilling. You can change the position of the handle in the bathroom at any time according to concrete needs. WIDELY USED― The surface of the shower handle is made of concave-convex textured rubber, which is comfortable and non-slip . This product provides safety protection for bathrooms, bathtubs and toilets, it is very suitable for the elderly and children.