I chose these because I needed sufficient shiny accents to break up the green space and reflect the lighting in the room. Garland never goes quite as far as you think (like the Christmas lights) so I always buy double what I think I will need. These will not go to waste. I look forward to testing their outdoor resilience. These do not have built in lights, but I’ve learned that having to plug everything in looks a mess and keeping up with changing out batteries is too expensive.