The 1 litre Vacumm Bottle by Stanley has stainless steel vacuum insulation, is perfect for keeping hot drinks hot and cold drinks cold for up to 24 hours (05 days for ice). The Vacumm bottle is constructed from 18/8 stainless steel that's naturally BPA-free. The stylish Hammertone Green green flask is leak-proof and rust-proof. Heaps of other features include a cap that can also be used as a cup and a generous lifetime warranty from Stanley.