Printed on glossy aluminium. Totally waterproof & usable indoors & out with 3 types of fixings available, choose from: No holes with sticky pads supplied Two holes with Rustic string supplied for hanging Four holes to be used for screwing directly (screw hardware not supplied) Supplied Sticky Pads are not rated for outdoor use. 3 sizes available: XL - 30cm wide x 40cm high Large - 20cm wide x 28 cm high Small - 14cm wide x 20cm high All corners ar rounded to avoid sharp edges. Any problems please feel free to get in touch. Thanks Go Skateboarding Metal Sign - Warning No Skate Vintage Worn Look Mancave Bedroom