treearm hard hat stickers set of 32 funny water proof helmet sticker and decals with american flag for hard hats construction helmet and tool box 2.5-3.5 inch size treearm treearm hard hat stickers set of 32 funny water proof helmet sticker and decals with american flag for hard hats construction helmet and tool box 2.5-3.5 inch size material: pvc. 100% high quality long lasting water proof , long term durability removable and reusable with ease different size from 2.5 inches to 3.5 inches one of the best way to convey your message without getting to in your face