Big Agnes Lost Ranger 15-Degree Sleeping Bags (650 Down fill)

Classic Series Down bags offer warmth, compressibility and big comfort. These Big Agnes System bags are now available with DownTekTM water repellent down- perfect for the weight conscious backpacker who wants a little more room and has admitted that even the weatherman can't know it all. Utilizing Big Agnes' full pad sleeve design, you can slip any 20" rectangular pad into your bag to keeping you in place all night long. FlowTM Construction: Insotect FlowTM is a flow-optimized insulation system that delivers uniform heat distribution and natural body contouring through its revolutionary baffle design. Flow Construction eliminates lateral and vertical down shifting by using vertical chambers with Flow Gates to regulate fill positioning and density. Strategically placed Flow Gates minimize vertical down shifting while vertical chambers minimize lateral shifting. With continuous vertical Flow chambers in place of traditional side seams, Flow bags eliminate potential cold spots which can occur with side seams. Vertical baffles now flow with your body for more rapid and uniform body heat distribution.