UL certified indoor/outdoor fairy lights. 100 energy saving LED bulbs on 33 feet of bendable copper wire. Bright, warm, and inviting light, powered via USB, so you can take them anywhere. Great for camping, decorating outside at xmas, or inside your home, safe for pets and kids too. Use them as Christmas lights or for any holiday and create stunning displays. And every glimmer/string lights set comes with our 100% customer satisfaction guarantee!