Canvas,Cotton,Flannel Imported Extreme Cold Weather Sleeping Bag for Adults: Rated to a formidable -25 degrees Fahrenheit, the ALPS OutdoorZ Redwood is a heavy-duty, oversized rectangle adult sleeping bag, ensuring exceptional warmth and comfort even in the coldest camping conditions, making it a vital addition to your camping essentials. Oversized Comfort with TechLoft Insulation: Experience unparalleled "wiggle room" with the Redwood's generous 38" x 80" oversized rectangle design, featuring innovative TechLoft Silver Insulation comprised of multi-hole micro-denier fibers with a siliconized finish for maximum loft, warmth, and compact storage, unlike restrictive mummy bags. Durable Construction for Rugged Camping: Built to last, this sleeping bag features a rugged cotton canvas outer shell and a comfortable 100% cotton flannel liner, providing both durability for demanding outdoor use and a soft, cozy interior for a restful night's sleep on your sleeping pad. Eliminate Cold Spots with Two-Layer Offset Design: Stay consistently warm throughout the night thanks to the Redwood's two-layer offset construction, strategically designed to eliminate cold spots and ensure maximum thermal efficiency in this cold weather sleeping bag, a must-have for serious camping enthusiasts. Easy Transport with Included Roll-Up Straps: Simplify packing and transport with the included three webbing straps featuring quick-release buckles, allowing you to securely compress and roll up this adult sleeping bag for convenient storage and portability among your backpacking sleeping bag gear.