The light string is heavy duty and weatherproof. The reason I can't give it 5 stars is the bulbs. I had a 50% mortality rate on the bulbs that came with the string. I ordered 4 extra, but one of those was bad too, so I'm still down 3 bulbs. The Starlight bulbs look great, but they just don't survive the rigors of shipping very well. I am concerned about what this means for long-term bulb life too.---UPDATE-- after a bit of fiddling, it turns out that almost all the bulbs work. Some of the socketSee full review