Built to keep you tucked up anywhere in mountains, be it the Alps or the at the foot of Aconcagua, on foot, or two wheels, the Rab Alpine 600 sleeping bag offers a great warmth to weight ratio and is the perfect companion for lightweight altitude adventures. Filled with 600g of 650FP duck down and covered with a wind-resistant Pertex® Quantum outer with a recycled nylon lining, the Alpine 600 is engineered to maximize down performance and achieves this thanks to its intelligent construction. Trapezoid box-wall baffles allo the down to fully loft, eliminates cold spots, and maximises warmth, whilst the Chevron baffle design improves down stability, distributing the down evenly around the whole of your body. The openings of the Alpine 600 have been designed to reduce heat loss, alongside a 3D-shaped, down collar that can be tightly cinched to trap and keep in the heat on extra cold nights. To keep heat from escaping along the zip, a down-filled baffle has been sewn in along its entire length. With its narrow mummy fit and angled footbox, the Alpine 600 cuts down unnecessary weight and bulk, keeps your pack light, and your nights warm and surrounded by cozy down. **Technical Specifications**- Rab Sleep Limit:Rab Sleep Limit: -9°C (15°F)- Weight:(Reg) 1050g/37.0oz, (XL) 1105g/39.0oz- EN (13537:2012) Temperature rating:ISO EN: Comfort: -5°C (23°F), Limit: -12°C (10°F), Extreme: -32°C (-26°F)- Product Code:QSD-29- 20D Pertex® Quantum nylon ripstop (36gsm) with fluorocarbon-free DWR- Lining: 20D Recycled Nylon (38gsm)- 650FP R.D.S Certified European Duck Down with Nikwax fluorocarbon-free Hydrophobic Finish- Weight saving chevron baffle design on upper torso, reduces down migration and optimises core warmth.- Trapezoidal boxwall construction with differential cut, to maximise loft and warmth- YKK zipped internal stash pocket- 3-dimensional shaped down filled neck collar to seal in warmth- YKK 3/4 length main zip with down filled baffle to trap warmth- YKK Anti-snag zip insert and anti snag internal zip guard- Angled foot box for relaxed sleeping posture- Zipped cotton sack with water-resistant base for home storage- Drawcord stuffsack included- Hand-filled in Derbyshire UK- Outer: 100% polyamide. Lining: 100% recycled polyamide- Tapered Mummy Shape Rab Alpine 600 | Down Sleeping Bags | BananaFingers