These outdoor string lights are UL-listed weatherproof commercial. The insulation material can protect the strand from hot winter, sun, wind, rain, snow, and dampness. Flexible heavy-duty cord withstands the wear of indoor and outdoor use., For greater mood lighting flexibility and a soft glow, for a birthday party, family reunion, or wedding reception. It adds flair to the bistro deck porch patio garden backyard terrace pergola cafe restaurant malls for wedding BBQ parties etc..., Each strand contains 20 pieces of E27-based hanging sockets, This Heavy-duty light is bright enough and ideal for illumination anywhere., Each socket has a hanging hook above, which makes it easy for hanging with hooks, guide wires, or zip ties. It can connect with another simply using grounded cord plugs into any standard outlets.,