Designed specifically for parents backpacking with children, this lightweight booze hauler is an ultralight backpackers dream. Except that ultralight backpackers probably don’t carry wine. I wouldn’t know. For the rest of us this container that weighs an ounce and folds down to nothing when the party is over…nothing short of brilliant. It allows you to squeeze the air out of your wine stash thereby ‘preserving it’. Oh please, as if the wine is going to be around long enough to be damaged by air. BPA-free. Kick ass.