Perfect for water, wine, or anything you want to carry with you! Originally designed as a wine growler, these fit a full bottle of wine perfectly.
 
From the manufacturer's website:
The double-wall vacuum-insulated walls give you a worry-free mind knowing your favorite wines are kept at their optimal temperature. Made of lightweight 18/8 food-grade stainless steel that is non-leaching and will not retain taste or odor. The double-wall technology prevents condensation on the outside of the growler so you don’t have to worry about ruining your attire while carrying it by your side.