Neutrino -18C/0F Sleeping Bag

The definitive cold-weather sanctuary for winter alpine missions.

The Rab Neutrino -18C/0F Sleeping Bag is an essential, high-performance refuge designed for serious mountaineers facing freezing temperatures and harsh winter basecamps. Engineered to deliver exceptional, life-saving warmth without the suffocating bulk and weight of traditional winter bags, it is built for climbers who need to move efficiently but sleep securely in sub-zero conditions. The highly compressible down lofts up instantly after a long day of kicking steps, while the weather-resistant outer shell expertly sheds frost and condensation inside a cramped tent. It perfectly balances packability and absolute thermal protection, making it a mandatory component of your cold-weather sleep system.