Canvas,Cotton,Flannel Imported Extreme Cold Weather Protection: Designed for comfort in frigid conditions, the Redwood sleeping bag features a -10°F rating, perfect for late-season hunts or winter camping trips. Rugged Cotton Canvas Shell: Durable outer canvas resists wear and tear in the field, offering long-lasting performance for outdoor adventures in any terrain. Oversized Rectangle Design with Full-Length Zippers: Generously sized at 38" x 80" for added space and comfort; heavy-duty #8 zippers allow for easy access and full ventilation options when needed. Heavy-Duty #8 Zippers with Zip-Together Capability: Features robust #8 zippers built to withstand rugged use; two identical bags can zip together for shared warmth and extra space. Soft Flannel Lining for Warmth and Comfort: The cozy 100% cotton flannel interior provides superior warmth and a soft feel, delivering a restful night’s sleep in cold environments. Built for the Outdoors with Reliable Portability: Ideal for camping, hunting, or cabin stays—includes compression straps for secure roll-up and easier transport to your next destination.