Our Cafe Lights Use Vintage Edison Bulbs to Create Great Ambience on Your Patio: Install this solar powered cafe string lights as a canopy over your porch or gazebo for a retro bistro look and a pleasant party ambience. The Ambience Pros are bright enough to grill and eat, without being overpowering. The outdoor string lights solar powered are made of strong and flexible rubber strands with shatterproof LED plastic bulbs that are sturdier than traditional glass bulbs. More importantly, these are waterproof, through winter snow and summer storms, they still going like clock work.