Stay warm in a range of conditions. The Mountain Hardwear Down Flip 35/50 Sleeping Bag has more down fill on one side than the other, so you can flip it according to the temperature. Water-resistant Q.Shield DOWN 600-fill retains maximum loft in damp conditions. Features:Q.Shield DOWN 600-fill down has an advanced treatment applied that resists heat robbing moisture and retains maximum loft in damp conditions Flip the bag from one side to the other to change temperature rating Roomy and versatile semi-rectangular cut 5" baffle spacing keeps down carefully controlled for even, predictable loft Dual slider zipper extends around footbox allowing the bag to be opened up and used as a comforter, two bags to be zipped together and increasing ventilation options Insulated draft tube with anti-snag panel prevents cold spots along zipper Single-handed drawcords easily adjust hood closu