Classic Vacuum Flask

Lifetime warranty

The iconic green vacuum-insulated bottle used by workers for generations.

Overall BIFL Score 91

Detailed Ratings

durability ★★★★★

Can survive drops from high altitudes.

warranty ★★★★★

Built for Life lifetime warranty.

value ★★★★★

High performance at a fair price.

repairability ★★★☆☆

Replacement caps available, but core body is sealed.

sustainability ★★★★☆

Designed to eliminate single-use containers.

Invented by William Stanley Jr. in 1913, the all-steel vacuum bottle changed the way drinks were consumed.