Rab

Neutrino Sleeping Bag: 10F Down

What Our Gearhead® Experts Are Saying:

"I took this on a late-season alpine trip where temps dropped into the teens overnight, and it held heat really well without feeling bulky. It packs down small, and I appreciated how evenly the insulation stayed in place through a few nights of use."

Cold alpine nights demand a system we can trust, and the Neutrino 10F Sleeping Bag from Rab is built for exactly that. Whether we’re pushing into higher elevations or settling into a cold-weather camp after a long day on the move, this bag keeps us warm without weighing down the pack.

Packed with 800-fill goose down and built with L.O.F.T 3D™ baffle construction, it maximizes heat retention while eliminating cold spots across the bag. A tapered mummy shape seals in warmth, while the Pertex® Quantum fabrics balance durability and packability by reinforcing high-wear zones like the base and footbox. Thoughtful details like a down-filled collar, adjustable hood, and insulated zip baffle help trap heat where it matters most, while the two-way zip allows us to vent when temperatures shift overnight.