Polar Pak

Polar Pak’s MOFLOW provides you with a pressurized water bladder.  We tested the MOFLOW while mountain biking in the Tetons, and were impressed by how well the bladder rode in our packs, and how quickly and easily the water was discharged.  As you can see from the picture, once you inflate or pressurize the MOFLOW, it becomes very rigid and slides into a pack with ease.