Ideal for traveling light in summer, the ultralight Marmot Always Summer sleeping bag delivers reliable comfort without weighing you down, and it doesn't skimp on features either. . 650+ fill power down insulation is treated with Down Defender to increase water resistance in wet conditions. Shell is made of 100% nylon ripstop with nylon plain weave lining for lightweight durability. Five-baffle Nautilus 3D hood wraps around your head to seal in the warmth; hood muff creates a warm gasket. Drawcord locker helps keep the cords from dangling in your face. Trapezoidal foot box matches the natural shape of your feet (wider at the toe, narrower at the heel) for comfort. Full-length locking zipper features dual sliders, oversized down-filled draft tube, and zipper guard. Ground-level side seams reduce heat loss. Stash pocket keeps small items safe and secure. Stuff sack and storage sack included.