Our Hex Sign decals work indoors and out on a variety of smooth clean surfaces. If you would like to put it on wood you need to make sure the wood is smooth and sealed. SIZE:Select size on right of page. ? FREQUENTLY ASKED QUESTIONS ? Can I get a custom size? Yes, we can customize your design to perfectly fit your space. Contact us prior to purchase, because some size changes can affect the price. Do you have different color options? Absolutely. Many of our designs come in multiple color variations. To choose your colors, simply select the ones you need from our color chart on the product listing. If you are interested in a color change to a design that doesn't offer color variations, please contact us prior to purchase.