23Zero Royal Series Sleeping Bags Availability Note: The Royal Sleeping Bag is currently available in our Earl size. Other size options have been discontinued. Heavy-duty, flannel-lined sleeping bags with smart zip-together versatility and included matching pillow-ideal for rooftop tents, swags, or ground camping. The 23Zero Royal Series is built for serious overland use and all-around outdoor comfort. Designed with a rugged cotton canvas outer and a soft cotton flannel lining, this sleeping bag is ready for a wide range of climates. The dual-layer construction traps heat while minimizing cold spots, and each bag includes a matching flannel pillow. Easily zip two together to create a double-wide bag or open fully into a large blanket. Whether you're sleeping in your rooftop tent or under the stars, the Royal series is ready for the adventure. Originally offered in 3 sizes: Earl (Available), Duke (Discontinued), and Queen (Discontinued). Key Features Rated to 25deg F: Warm enough for cold nights under canvas Durable outer shell: Made from 100% cotton canvas for weather resistance Soft lining: 125gsm cotton flannel interior for home-like comfort Dual-layer fill: 2 x 160gsm on top, 2 x 200gsm on bottom for balanced insulation Included flannel pillow: Every bag ships with a matching comfort pillow Ventilation toe zipper: No.10 nylon zipper at the foot for adjustable airflow Zip-together capability: Combine two bags into one oversized bag Internal storage pocket: Keep your phone or valuables tucked away Compression bag included: 100% cotton canvas for tough transport Sizing & Weight Earl: 36" W x 78" L - 7.5 lbs (Available) Duke: 44" W x 78" L - 7.5 lbs (Discontinued) Queen: 62" W x 78" L - 7.5 lbs (Discontinued) Watch It in Action