Made for lightweight adventure, the Alpine 400 sleeping bag showcases Rab's industry-leading expertise in down-filled sleeping bags. Hand-filled in Derbyshire, the bag is made from durable, partly recycled polyamide and filled with 400 grams of responsibly sourced duck down.A Trapezoid boxwall baffle construction has been used to maximise loft and warmth while reducing cold spots. The bag also comes with down-filled baffles and collars to further prevent warm air from escaping as you sleep.A narrow mummy-shaped fit and angled footbox cuts down on pack size and fits easily in small one-man tents, ideal for backpackers and lightweight campers.Outer material: 20D Pertex Quantum nylon ripstop (36gsm) with fluorocarbon-free DWR (Durable Water Repellent)Insulation: 650 fill power R.D.S Certified European Duck Down with Nikwax fluorocarbon-free Hydrophobic FinishLining: 20D Recycled NylonWeight-saving chevron baffle designTrapezoidal boxwall construction - maximises loft and warmthYKK zipped internal stash pocketDown-filled neck collar - keeps the warmth inYKK 3/4 length main zip with down-filled baffle to trap warmthYKK Anti-snag zip insert and anti-snag internal zip guardAngled foot box for relaxed sleeping postureDrawcord stuff sack included for compact storage during transportZipped cotton sack with water-resistant base for safe storage at homeHand-filled in Derbyshire UKMaterial: Outer: 100% polyamide, Lining: 100% recycled polyamideTapered Mummy ShapeComfort limit: -1°C (30°F)Rab Sleep Limit: -5°C (25°F)Weight: 840g