The combination of great design and high quality made SIGG one of the world's leaders in reusable bottles. See why for yourself! These are so well made, 100% recyclable, taste neutral, and unbreakable. They’re manufactured from a single piece of pure aluminum, with no seams. The non-toxic inner liner has been extensively tested and proved to allow 0.0% leaching of any kind from the bottle to your drink. Not to mention, they’re so good looking and functional, they’ve earned a place in the permanent collection of New York’s Museum of Modern Art.