The SolarPuff is solar powered and engineered to be collapsible with pull-open technology, waterproof and lightweight, yet durable even in extreme weather. Perfect for the great outdoors or emergency situations. The sleek, clean design of The Helix uses TPU technology for increased elasticity and transparency to provide a uniform natural glow. SolarPuff keeps a minimum 50% battery charge even after 2 years in storage! Lightweight, compact, collapsible, waterproof and portable. This solar lantern is perfect to use outdoors and also an addition to any emergency kit for at home or in the car.