DESC: The Trestles Sleeping Bag features Marmot's famous quality and rich experience in sleeping bag design in a bag built for backpacking and river trips undertaken in cooler climates. Wave Construction, used to build this bag, is the warmest shingle construction available, fitting extra insulation into these bags by creating an overlapping wave of shingles throughout the bag. The Trestles bags will keep you warm and dry in the wettest of environments. Micro muff cushions the drawcord around your face.