For winter summits and sends, we zip into Rab's Nebula Pro Jacket. The Primaloft Silver RISE insulation mimics down with all of the warmth and none of the bulk, while the rugged Pertex Quantum Pro fabrication resists abrasions and tears against rock and is treated with DWR to shed drizzles and flurries. Equipped with a helmet-compatible hood, elasticated cuffs, and a two-way front zip, this puffy is belay ready, ensuring we stay both warm and safe when giving our partner a catch.