Make sure to always wear a helmet, when you're riding a bike, motorcycle, or when you're a skeleton wielding an axe. Our 3" vinyl sticker is safe to use on cars, water bottles, laptops, etc. It's water proof and UV resistant, so it's safe to stick virtually anywhere, like your iron helm. -3" vinyl glossy sticker -Weatherproof/fadeproof -Easy-to-peel backing -Safe for use on cars, water bottles, and laptops -Designed and shipped by us Thank you for supporting this small business! <3