1.These stickers are made of brushed silver material and can be easily applied to various surfaces. 2. Each sticker is a 4-inch circular size, with a total of 12 stickers in one set. 3. These circular stickers can easily distinguish how to classify this garbage. 4. Easy to peel and stick, not easy to peel off, suitable for both indoor and outdoor use. 5. The design of the garbage classification and recycling label stickers is very eye-catching and will not fade over time.