The Western Mountaineering Caribou MF 35 Degree Sleeping Bag is a durable sleeping bag for summers on the trail. The MicroLight XP™ exterior fabric is built to withstand constant use, making it ideal for thru-hikers heading from Georgia to Maine, or anywhere in between. Rated to 35°F, the 850+ fill power down is nice and lofty, ready to wrap you up in comfort once the long day of hiking comes to an end. With a little bit of a wider cut, you'll be able to snuggle in just right and the breathable taffeta fabric will help regulate body temperature from the moment your eyes close to day break. As you pack up come morning, the XXS stuff sack and 1 lb, 5oz of weight will hide away into your backpack quick and easy.