The SunRocket Solar Water Heater & Thermos by SkyRocket is a reliable and lightweight outdoor survival gear suitable for activities such as camping, hiking, and backpacking. Made from durable materials like Vycor Glass/Aluminum and plastic, this black thermos model is designed to keep water hot in the sun, making it a convenient and energy-efficient option for outdoor adventures. With a compact design and weighing only 2.6 lbs, this solar water heater is a must-have for anyone looking to stay hydrated and comfortable while exploring the great outdoors.