Excellent belay puffy - Rab Neutrino Endurance Jacket - Men's

For the weight, I don't think there's a better, warmer down jacket in the category. The construction is excellent, as expected from Rab. This jacked is best used as a final layer to stay warm when stationary (camp, belay, etc) on very cold days. With the rest of my layering system, this jacket doesn't come out until the temps get down towards the single digits, but once it's that cold there's nothing better.