The Sylvania Stay Lit LED C9 Lights are a festive addition to your holiday decor, featuring 2 sets of 50 multi-color lights that can be used indoors or outdoors. These string lights are energy-efficient, thanks to their LED technology, and their green cord color adds a touch of eco-friendly charm. With a holiday theme and staying lit feature, these lights are sure to create a warm and whimsical ambiance for your Christmas celebrations.