The Fatboy 400 is huge! It has all the extra room you need for 4 season camping. And compared to other sleeping bags of the same size and temperature rating, this Fatboy is still the leader in compact/ lightweight.

• Insulated banana hood for added comfort and warmth
• Suresoft brushed polyester lining is warm and comfortable
• Drawcord at shoulder – use it to trap heat in and keep the cold out
• Oversize 2-way nylon coil zipper allows for venting at foot; hi visibility fabric zipper pull
• Anti-snag zipper tape, and insulated draft tube behind zipper
• 4 fabric loops allow for attached cord to hold sleeping pad in place
• Compression carry bag with 2 YKK quick release buckles and oversize straps
• Hotcore sleeping bags of the same dimensions can be opened and zipped together around the outside edge
• A few words on temperature ratings…
• Hotcore Sleeping Bag Owner’s Manual and Warranty Information