نظرة عامة100% MEDICAL GRADE STEEL LINERS:IRIS bottles are made from super high-quality Stainless Steel (also called 'Surgical Stainless Steel'), the highest quality steel available on the market. | The lid is 100% leak-proof and works great on-the-go to the office or to school. Fits great in a bag, backpack or a purse. The surface is powder coated, providing a durable and textured surface that feels of quality. The logo is laser engraved on the bottle. NOTE-- IRIS bottles are designed to be washed by hand only. | DOUBLE-WALL INSULATED: IRIS bottles are 100% vacuum insulated which means they are sweat-free and will keep your keep your beverages COLD for up to 24 hours and HOT for up to 12 hours. | 100% BPA FREE & 100% COPPER FREE: IRIS bottles are copper-free and use EcoProof technology to ensure maximum insulation. Unlike other leading brands, we don’t use hidden copper insulating elements in our bottles. And of course, everything is BPA FREE. | SUSTAINABLE DESIGN: The wide neck is designed to accommodate ice-cubes and the base of the bottle fits perfectly into most cup-holders.