Introducing our special Katahdin Ranger 0F mummy bag, a tactical upgrade to our Advanced Synthetic line. With a 'Night Camo' ripstop poly shell, it enhances the already impressive water resistance of our down-like synthetic fill. ClusterLoft advanced synthetic, more durable than down, performs better in wet conditions. You'll find no better synthetic bag at our honest everyday prices. Designed for four-season warmth, it's perfect for thru-hiking, backpacking, and bike-packing, offering a superior weight-to-warmth ratio. The 100% ClusterLoft fill, simulating down's compressibility and heat retention, results in a 625 fill power equivalence. More affordable than down, it retains heat better when wet. We recommend these to budget-conscious, versatile backpackers. Key features include being the lightest synthetic mummy sleeping bag available, saving space and weight, and keeping you warm and dry. It boasts long-lasting durability, coming in sizes Short, Regular, and Long/Tall/XL. Our USA-based brand, Hyke & Byke, offers premium quality at the best price by keeping operating costs low. Don't overpay for similar bags; this one's trail-ready for all your adventures.