Many view the Softie 12 Osprey as the ultimate four-season synthetic fill sleeping bag. Since its launch in 1987, it has been setting the standard for winter bag performance for others to follow. Along with the rest of the Softie range, the benefits go on and on. The Softie Premier filling has great insulating properties, trapping heat and maximizing comfort; the mummy-style shape is designed for warmth and comfort and the snugfit hood has an adjustable cord to ensure a comfortable night’s sleep, even when the temperature drops.