MSR DromLite Bags offer high-capacity water storage yet collapse all the way down to the size of their cap. This supreme packability comes with the weight savings to match to keep you moving quickly on the trail. Reconstructed of a rugged film and RF-welded seams, they offer reliable durability. Inside, an improved BPA-free food-grade lining ensures better-tasting water and can handle freezing. Accessories like the Shower or Hydration Kits add do-all versatility, and the new svelte 3-in-1 cap lets you fill, drink and pour with ease. Features and Specifications Extremely Compact: High-capacity yet folds down to the size of its cap for ultimate space-savings—an elastic bungee keeps it tightly folded when empty. Light: Lightweight, durable film construction is perfect for fast and light travel, backpacking and hiking. Improved Attachment: Loop at top makes it easy to hang and carry. Durable: Made with rugged film and RF-welded seams. Safe Drinking: BPA-free. Assembled in the U.S.A. of U.S. and Imported Materials Material: PU Volume:4 litres Weight:147.8g Width: 25.4 cm Length: 39.4 cm Made in USA MSR Drom Lite Bags Top Pick Award, Outdoor Gear Lab "If you seek a versatile and lightweight hydration bladder, the MSR DromLite is our best recommendation. During our tests ranging in locations from the Grand Canyon to the 14,000 ft peaks of the Colorado Rockies, we battered this bladder to see if it would hold up to the durability standards of its predecessor. We hung it from rocks, bushwhacked with it on the outside of our pack, stuffed it into tight spaces, froze it, and heated it up. After these tests (and many others), we are happy to report that this newly redesigned bladder is still incredibly durable and provides better performance (minus the taste). It is lightweight and folds up to the size of its cap, making it easy to pack into small corners of your already overloaded backpack. It also provides many functions that surpass that of just a water reservoir. It works well as a camp pillow, solar shower, hand washing station, hot water bottle…and even a dog bowl! And of course, it does a pretty good job at holding and distributing water. As a result of its multitude of functions, it's our Top Pick for backpacking." Outdoor Gear Lab, 2019 MSR DromLite Water Storage Carry Bag - 4 Litre