Details Neutrino 200 Down Sleeping Bag - Right Zip The Rab Neutrino 200 is an incredibly lightweight down sleeping bag, filled with top quality 800 fill power Hydrophobic goose down, responsibly sourced and certified by the R.D.S. It's perfect for summer use, lightweight backpacking, mountain marathons, cycle touring or anytime when saving weight is paramount. It's still pretty warm though, with a Limit of Comfort rating of 1°C, and you can always boost that with clothing or a belay jacket. The Neutrino bags have a mummy taper shape that maximises warmth for minimum weight. The bags are hand-filled in Derbyshire by our experienced fillers - some of whom have been with Rab for 20 years - what they don't know about down isn't worth knowing! Pertex Quantum inside and out keeps the shell weight to a bare minimum. Weight: 579g Right Zip Lightweight Nylon Ripstop inner fabric 800FP R.D.S Certified European Goose Down Rab fluorocarbon free Hydrophobic Down developed in conjunction with Nikwax Weight saving baffle construction, preventing down shift/migration Mummy Taper Shape Proportionally designed differential cut Trapezoidal chamber design to eliminate cold spots 1/2 length YKK 5 coil main zip with full length baffle and glow-in-the-dark pullers Internal stash pocket Anti snag bonded zip guard Ergonomically designed internal collar Internal 3D collar and hood drawcord Trapezoidal baffle chamber design Angled foot box Dry bag compression stuff sack Cotton storage sack Temperature tested to new European standard: EN1357:2016 Filled in Derbyshire UK Specifications Neutrino 200 Down Sleeping Bag - Right Zip