These stainless steel, double wall vacuum insulation water bottles will keep your cold drinks cold and your hot drinks hot! The lid can be unscrewed for easy cleaning and is designed for even the most rugged of uses. The ring on the back of the water bottle can be used to hang from a backpack and the closing straw makes sure there are no unwanted spills. Personalization on the water bottles is included in the price and will outlast the bottle. Each water bottle is laser engraved.