It worked as described. Made filling up the sleeping pad super quick and easy. Build quality seems top notch, but I've only used it a handful of times so far. It's entirely waterproof from the tests I've made. The design is similar to a dry bag, and it's so large that it does that job well. I can fit my sleeping bag, bag liner, sleeping pad, trekology inflatable pillow, and puffy jacket easily inside it. I leave the valve open, roll it up super tight, then buckle it and close the valve. Helps compress everything a little bit more to save room in the pack. Probably going to start using it as my food back at camp too hanging it from a tree. Definitely recommend grabbing one if you have the sleeping pad.