Montbell U.L. Air Pad 180 - BlueFor those who want to keep the grams down without sacrificing a good night's sleep, the U. L. Airpad is a seriously lightweight inflatable sleep pad from Montbell. Made from 30 denier ripstop, it's tough enough for camping on rough surfaces, while still only weighing 504g. Another clever detail is that stuff sack, which doubles up as a manual air pump for when you want to give your lungs a rest.