The RAB Neutrino 400 Long sleeping bag is a mummy-shaped model, ideal for mountain activities or trekking during the 3 seasons of the year: spring, summer, and autumn. Thanks to its RDS-certified goose down fill, it offers excellent insulation against the cold. The outer shell of the bag is made of recycled Pertex Quantum fabric, which provides efficient protection against wind and moisture. With this sleeping bag, you can sleep comfortably while being sheltered from the elements. Finally, its lightweight and compressible volume make it a perfect option for alpinists and adventurers concerned about the space their equipment occupies.  Features of the RAB Neutrino 400 Long:   Zipper on left side 3 season use: mountaineering, long hikes, backpacking Fill: 800FP European Goose Down with Nikwax Fluorocarbon-Free Hydrophobic Finish (400g / 14.1oz) Lining: 20D Recycled Nylon 20D Pertex Quantum Recycled DWR finish Mummy shape Trapezoidal boxwall construction Close fitting adjustable neck baffle Waterproof roll-top compression sack included EN (13537:2012) Temperature rating: ISO EN: Comfort: -1°C, Limit: -7°C, Extreme: -25°C Length: 230 cm Shoulder width: 81 cm / hip width: 67 cm / foot width: 52 cm  Packed size: 35 x 23 cm Weight: 835 g Sleeping bag RAB ---Neutrino 400 Long Left Nighfall Blue