Pineapple Skull Waterproof Sticker Blackout Island High quality, waterproof, we have had stickers these our boat cooler for years and they still look good.These stickers are great for both indoor and outdoor use as they are made with thick, resistant, laminate vinyl material. The easy-peel backing makes for great ease of use, while the matte finish helps your designs look sleek on any surface..: Material: water-resistant vinyl.: Suitable for indoor and outdoor use.: Easy peel backing.: Matte finish