Our newly redesigned Celsius Sleeping Bag leaves ordinary rectangular bags in the rearview with a modern angled baffle pattern and a handful of anything-but-basic hues to match your personal style. But the Celsius is not just a pretty facethe double-layer construction and innovative fiber fill chase away the chill so you stay snug as a bug long after the sun goes down. We even added a cinchable mummy-style hood for extra warmth (bonus: it also keeps your camp pillow free of crud). Finally, we streamlined the sizes on our new Celsius Sleeping Bag line to make sure everyone sleeps happy. The Celsius Mammoth double two-person sleeping bag is the same as our previous Mammoth size (94"" x 62"") and features a durable polyester taffeta shell that's tough and easy to clean.