BCA was the first to pioneer the concept of freezeproof winter hydration. Then they made it more convenient with the Nalgene-compatible hydration system. In 2007-08, they've broken new ground by adding Outlast® temperature regulation technology.
The new Stash sleeves are insulated with Outlast® phase change material, which stores heat when it's produced and releases it when the temperature drops. With the Outlast® sleeve, your hose and bite valve now retain heat longer during cold lift rides or when you remove your pack.
Specs:
2400 cu in/35 liters
100oz/3-liter reservoir
210 micro diamond rip
Stormproof zippers
External shovel pocket
Diagonal & A-frame ski mount
Removable plastic/foam framesheet
Weight: 46oz/1304g
Colors: stealth black, olive green, burnt red, midnight blue