What Our Gearhead(R) Experts Are Saying:"I brought the Ultra 8R Mummy Sleeping Pad on a cold weather backpacking trip and the 8. 8 R-value kept the ground chill from ever reaching me, even on a hard freeze night. The Schnozzel pumpbag made inflating it quick without ever getting light-headed from blowing it up myself."Winter nights in the backcountry come down to one thing: keeping the cold ground from stealing your sleep, and the Ultra 8R Mummy Sleeping Pad is built to make sure that never happens. SynmatPlus Technology(TM) combines recycled microfiber insulation with reflective foil layers, delivering serious warmth without piling on weight or bulk. Welded baffles keep air chambers stable and separated, eliminating cold spots through the night, while Comfort Cradle(TM) side rails help center the sleeper and prevent rolling off the mat. Independent inflate and deflate FlatValves make setup and takedown fast and intuitive, and pillow attachment tabs keep a camp pillow from sliding away mid-sleep. It's a pad built for the coldest nights of a backpacking or mountaineering trip, when a bad night's sleep isn't an option.