The Mammut Perform Down 20 Sleeping Bag is a 20°F sleeping bag for focusing on sleep while backpacking. Sleep better and you'll perform better on the trail during the next day's adventure. Mammut has focused on noise, space and temperature to help you have a better sleep on the trail. The 700 fill power down is light yet warming and a center zipper allows you to adjust temperature through the night. Inside the hood, the fabric is soft and quiet, plus an Insulation chamber offers additional protection from the cold. Slip on the included sleep mask and utilize the ear plugs to shut out noise and light, for a solid sleep through the night. Features of the Mammut Perform Down 20 Sleeping Bag Restorative sleep thanks to a newly developed sleeping bag shape Intuitive climate regulation with a central 2-way zipper Comfortable, soft material in the hood reduces noise and increases comfort Including deep sleep mask and earplugs to reduce light and noises PFC-free DWR treatment Lining made from 100% recycled polyester 700 cuin fill power with ethically procured and certified RDS down Tested according to standard EN ISO 23537-1:2016 Easy-to-use magnetic closure on the Insulation collar Improved YKK zipper prevents jamming of material Insulated covering along the zipper to protect from cold bridges and enhance climate comfort Insulation chamber around the hood opening to protect from cold and wind Drawstring for easy adjustment of the hood and Insulation collar Better Insulation thanks to an Insulation collar Revised anatomical foot box for greater comfort without extra weight Zipper garage reduces cold Areas at the end of the zipper Internal pocket to store valuables Lightweight and extremely compressible Supplied with a storage bag Supplied with a packing bag