With the Neutrino 600, dare to embark on an adventure. In ultralight mode, this sleeping bag from Rab is ready to join you in exploring the peaks. Even in negative temperatures, sleeping in a tent remains possible thanks to its goose down that retains warmth throughout the night. Rab Sleep Limit: -12 °C (20°F) EN Temperature Rating (13537:2012): Comfort -5°C (23°F), Limit: -12°C (10°F), Extreme: -32°C (-26°F) Recycled nylon ripstop Pertex® Quantum 20D (38 g/m²) with fluorocarbon-free DWR Lining: Recycled nylon 20D (38 g/m²) RDS-certified European goose down 800FP with Nikwax fluorocarbon-free hydrophobic finish Chevron baffle design saves weight, reduces down migration, and optimizes core warmth Trapezoidal boxwall construction with differential cut to maximize loft and warmth Adjustable and snug neck baffle design to reduce heat loss YKK 3/4 length main zip with synthetic-filled baffle to trap heat YKK zipped internal pocket Angled foot box for a relaxed sleeping posture YKK anti-snag zip insert and internal anti-snag zip guard Hand-filled in Derbyshire, UK Cotton storage sack with water-resistant base for home storage Waterproof compression sack included Tapered mummy shape Material: 100% recycled polyamide Lining: 100% recycled polyamide Weight: 998g Rab Neutrino 600 - Sleeping bag - Men's