Each Iron Flask Water Bottle You Purchase is an Investment in Sustainability and is a Great Way to Reduce Plastic Waste While Being Eco-Friendly! Features 18/8 Stainless Steel and is vacuum insulated to keep your bottle condensation free. The powder coated exterior finish gives your bottle durability and an easy grip for your hands. Each bottle is packaged in a color matching gift box. To keep your bottle and message in the best possible shape we recommend to hand wash in warm soapy water.