Bring delicate touches of illuminated beauty to your outdoor space with this set of 3 Butterfly solar garden stones. The trio was crafted from outdoor-safe polystone that has been treated with a special finish for protection against the sun and weather. Solar panels on the back of each stone collect sun during the day to illuminate the flying friends at night. For best results, allow the butterflies to receive approximately 8 hours of direct sunlight. Once lit, the pieces glow for around 6 to 8 hours before automatically shutting off. Includes rechargeable batteries for each butterfly.