Zpacks 20f Classic Sleeping Bag

The Zpacks 20f Classic Sleeping Bag is a 3-season bag with a tapered cut and a 3/4-length bottom zipper, blending quilt-like weight savings with the more enclosed feel of a traditional bag. Filled with 339 g of 900 fill-power duck down and rated to -7°C (20°F), it starts at 471 g — a solid warmth-to-weight balance for spring through autumn trekking. Vertical box baffles keep the down evenly distributed along the length of the bag, preventing it from shifting or clumping as you move inside it. The Ventum Ripstop Nylon shell uses a PFAS-free DWR finish, in line with the broader move away from so-called forever chemicals in outdoor gear. It skips a draft collar and hood entirely, so a warm hat is needed to complete the sleep system. This bag suits hikers who want less weight than a full hooded mummy bag but more enclosure and warmth than an open, zipperless quilt.