What Our Gearhead(R) Experts Are Saying:"I've used the Positron Pro Hoodie on some seriously cold bivies and summit pushes, and it's never let me down. The boxwall construction eliminates cold spots, and the 800-fill down is super lofty and warm. I also love how the Pertex Quantum Pro shell shrugs off wind and snow without adding bulk." When the temps plummet and the altitude climbs, we reach for the Positron Pro Hoodie. Rab built this expedition-grade puffy for serious cold-weather performance, using 800-fill-power goose down and full boxwall baffle construction to eliminate cold spots and maximize warmth during exposed belays, summit pushes, and nights above the snowline. The tough Pertex(R) Quantum Pro shell sheds wind, snow, and abrasion, while the helmet-compatible hood, dual insulated chest pockets, and articulated sleeves provide all the technical features we need for vertical travel. Inside, mesh stash pockets and a zip security pocket keep gear close at hand, and the dual hem adjustment seals in heat. Built for high-alpine reliability, the Positron Pro is the kind of insulation we trust when the margin for error is razor-thin.