Root7 One Bottle® is designed to be the only bottle you will ever need. With their “Copper is cooler” technology, the double-walled stainless steel water bottle is enhanced with an internal copper-coated layer for added performance and insulation. With Root7, gain the perfect confidence that your drink stays cold for 30 hours and hot for 20 hours - so you can move freely, with a pocket of instant hydration. Offering stylish exteriors and function-heavy interiors, savor the enjoyment of everything you drink.