Diecut stickers (peel and stick) can be placed on any flat non-porous surface such as a laptop, water bottle, phone case, bike helmet, ski helmet, football helmet, lunchbox, skateboard, coffee mug, tumbler, and more. Finish: Matte Sticker Dimension: 3" wide x 3" high Note: these stickers are not suggested for putting in the dishwasher or microwave because heat can make a sticker come apart.