For starters, they weigh about the same, with the Hydro Flask being slightly lighter at 1.27 pounds compared to Stanley's 1.4 pounds. They're also similar heights, with Hydro Flask measuring 12.65 ...

The thermos flask boasts a large capacity of 1.8 liters and is priced at 129 yuan ($19), making it an affordable option for those looking for a high-quality thermos.

Restoration of an old rusty flask from the First World War. I found this old rusty military flask on a WW1 battlefield. The flask was in terrible condition. The bottle was very rusty and damaged.