Thermos or vacuum flask is an insulating storage vessel which keeps its contents hotter or cooler than its surroundings.
The vacuum flask consists of two flasks, placed one within the other and joined at the neck. The gap between the two flasks is partially evacuated of air, creating a near-vacuum which prevents heat transfer by conduction or convection.
Our recommended thermoses are :
Thermos Stainless King 16-Ounce Food JarOur recommended thermoses are :
,
Thermos Foogo Leak Proof Stainless Steel Food Jar
, and Thermos Stainless King 40-Ounce Beverage Bottle
