An ultra lightweight model with pitzips for ventilation and a chest pocket

allowing you to drink on the go without setting down your backpack

or small items you need for your journey without added weight

Use this vest to regulate your comfort from fall through spring

*Only compatible with the Flex Water Pack series

Montbell Thermo Tumbler 400 MB Logo Insulation/Shell An ultra lightweight model withA light weight double walled tumbler with superior insulating properties to keep beverages hot or cold. Maintains high insulation by filling the double walls with insulating foams and has a tight sealing flip top closure. Compatible with most cup holders. May not fit certain cup holders.