The Fold-A-Jug is a premium quality, collapsible water container designed specifically with backpackers in mind. The 1 gal./4L size holds enough hot or cold liquid for any daypack adventure and when you're done it collapses down to a very small size. The "no glugging" design feature on the cavity makes it simple to drink, and the large neck size allows you add ice easily. Specifications Length: 5.75 Width: 3.00 Height: 7.50 Weight: 0.29lbs