The Master Series: A century of know-how meets state-of-the-art design in every detail. For the pro's pro, the toughest of the tough, and everyone who demands the very best, Stanley's Master Series sets a new standard for durability and thermal retention.
Quadvac Insulation: keeps drinks hot or cold for 27 hours or iced 100 hours
1.0mm 18/8 Stainless Steel: the strongest you'll find by far. Rust-proof and naturally BPA-free
Steel lined pour thru stopper: No plastic contact for contents
