Products

Types of insulation
	Stainless Steel - Vacuum	Glass - Vacuum	Foam	Double-wall
Heat retention rating	Best, usually 12 hours	Next best : usually 8 hours	Third, pretty good	Lowest retention
How to make it	Create a double wall area between the exterior and interior wall. Take the air out between the walls with a machine. The double vacuum method used by Trudeau is superior to the single method used by our competitors.	A glass bottle that has a double wall and vacuum construction.	A double wall format, made by placing polyurethane between two walls.	Air space between the exterior and interior wall.
Benefits	Vacuum makes it the hardest for ambient air to change the liquid or food temperature in the container.	Excellent insulation.	Improved retention to double-wall. Lower price with good insulation.	Good insulation at a low price.