Zpacks Classic Sleeping Bag

The Zpacks Classic functions as both a quilt and a sleeping bag. You can use it fully enclosed for maximum warmth on colder nights or unzip the 3/4 length bottom zipper to open it up like a quilt when temperatures rise, offering significantly more versatility than a traditional mummy bag.

The foot box is designed to be roomy enough to accommodate various sleeping positions, including side sleeping, without feeling restrictive. While it offers more space than a tapered mummy bag, the vertical baffles help keep the down insulation in place so you don't experience cold spots regardless of how you move.

While 900 fill power Muscovy Duck down provides an excellent warmth-to-weight ratio, it is still down and requires care. The shell and liner are treated with a PFAS-free durable water repellent to protect against light moisture and condensation, but you should still use a waterproof stuff sack to keep it dry inside your pack.

This bag is designed to fit users up to 78 inches (6 feet 6 inches) tall. If you are near this height, you will have enough length to pull the bag up around your shoulders comfortably.

Vertical baffles are designed to prevent down migration, which is the tendency for insulation to shift to the sides of the bag. By keeping the down evenly distributed across your body, these baffles ensure consistent warmth throughout the night, even if you toss and turn.