Coleman Big Bay 40°F Cold-Weather Sleeping Bag for Big & Tall Adults – Mummy with Headrest & Foot Ventilation

Warmth and comfort for cold-weather adventures

When you're chasing an overnight outdoors, the Coleman Big Bay sleeping bag is designed to deliver reliable warmth without sacrificing comfort. It uses Coletherm insulation intended to keep you comfortable in temps as low as 40°F, while the cinched hood forms a built-in headrest that adds both warmth and support as you settle in for the night. A Thermolock draft tube runs along the zipper to help minimize heat escape, and the ZipPlow design keeps the zipper running smoothly so you can slip in and out with ease.

Big & Tall design for extra room and freedom

Sized for larger campers, this bag accommodates adults up to 6 ft 5 in with a roomy interior of 36 x 85 inches. The soft fleece footbox and the Comfort Cuff around the face area provide a gentle touch against the skin, helping you feel cocooned even when the night air touches the edge of the bag.

Key features at a glance

• BIG & TALL SIZE: Fits adults up to 6 ft 5 in
• INSULATED BODY: Coletherm insulation keeps you warm in temperatures as low as 40°F
• BUILT-IN HEADREST: Contour shape with cinched hood provides a headrest with more comfort and warmth
• FOOT VENTILATION: J-zipper lets you air out footbox on warmer nights
• COMPRESSIBLE STUFF SACK: Makes it easy to quickly pack up and store sleeping bag
• HEAT RETENTION: Thermolock draft tube prevents heat loss through the zipper
• EASY ZIP: ZipPlow patented zipper design prevents snags so bag is easy to open and close
• SOFT MATERIAL: Cozy Foot soft fleece footbox and Comfort Cuff material for softness and protection around the face
• ROOMY INTERIOR: Dimensions are 36 x 85 in

Real-world use and scenario ideas

Perfect for car camping trips, backyard stargazing, or late-season excursions where nights cool down. The headrest adds a built-in comfort feature you’ll notice as you settle in, while the foot-vent option gives you flexibility on milder evenings. When packing is needed between sites, the bag compresses easily into its stuff sack for transport and storage.

Tips to get the most from your Coleman Big Bay

• Opt for the Big & Tall version if you value extra space for movement and layering
• Pair with a sleeping pad to add cushion and an extra layer of insulation