Solar, portable, and always ready to hang, Solar String Lights are the perfect way to brighten the backyard or backcountry. Hidden inside the expandable unit, these 18 ft nylon-braided string lights pack 100 lumens of power into 10 shatterproof bulbs. Along with mobile charging capabilities, an IPX4 waterproof rating, and shining for up to 20 hours on a single charge, you can string up some sun wherever you are.