Design principle: Each strip sticks securely to the tub surface with its special eco-friendly adhesive. Its bristles have hundreds of tiny cavities to cause friction. At the same time, the adhesive strips for the shower allow the water to flow freely, so that the soapy water does not slip. Advantages: These stickers stick firmly to smooth surfaces and provide strong adhesion and superior adhesion, which provides long-lasting protection against slips and drops. The special adhesive of these shower stickers is easily removed without leaving any residue. Besides, the shower stickers are non-toxic, non-fading, safe and convenient. The package contains 24 transparent stickers (0.8" x 7.9") in a silicone squeegee of superior quality. Ideally, the 24 stickers should cover most of the tub's surface to best reduce the risk of slipping. You can, however, use these stickers on the stairs to make them safer.