With strategically placed insulation and enough down to provide warmth to zero degrees, the Marmot Womens Teton 650FP Down Mummy Sleeping Bag is an exceptional three plus season bag for trekking and backpacking. Lighter and more compressible than ever, the Teton also features water resistant down, which helps maintain loft in wet conditions, and an anatomically designed wrap around footbox. Insulated with certified 650 fill power down with Down Defender to improve water resistance in wet conditions. Shell is 30d 100% nylon ripstop DWR 1.5 ozsq. yd. Lining is 30d 100% nylon DWR 1.27 oz.yd. Anatomically designed footbox with wrap around construction increases warmth. Full Length locking YKK two way zipper with anti snag slider and zip guard reduces fabric snagging. Womens specific fit, with more insulation in key areas. EN Tested: Comfort: 11.8F 11.2C Lower Limit: 2.0F 18.9C Extreme: 40.9F 40.9C Down filled collar with easy access drawcord. Nautilus multi baffle hood. Internal stash pocket and heater pocket in footbox. Snagless insulated draft tube. Ground level side seams. Hood draw cord. Zipper garage. Stretch tricot baffles. Two hang loops. Stuff and storage sack included.