Butterfly Dreams 0.6 liter Aluminum Bottle No Weird Taste: Non-toxic baked-on inner-lining does not impart odors or tastes Lightweight but Strong: Weighs no more than a plastic water bottle Leakproof: Seamless construction made from a single piece of pure aluminum Cool Designs: Sigg bottles are as good to look at as they are to drink from. Baked on powder coat finish lasts for years Recyclable: Sigg bottles are pure aluminum and recyclable when they finally require replacement