The originators of freezeproof hydration; BCA realizes that proper hydration is your key to bagging peaks and slashing powder. By carrying a freezeproof system you can guarantee that your day will not be spoiled due to dehydration caused by a frozen tube. The Stash hydration system doesn’t just slow down the freezing process, it reverses it. Conductive mesh extracts heat from your steaming armpit and then traps it with Outlast thermal regulation fabric. This keeps your hydration system free of ice–giving you plenty of vertical to brag about over a cold one at the end of the day.