This is the answer to all your down related problems. This jacket has its baffles filled with Primaloft Gold Insulation Down Blend which is made up of 30% Primaloft gold & 70% 750 fill water resistant goose down. So it is safe to say that this jacket is not only super warm & packable, it also maintains its warmth during damper weather, but I still wouldnt advise you to wear it in a down pour as your outer layer, pop on your hard shell! This is an ideal belay jacket, it packs down small, it is very warm so maintains your body temperature whilst you wait for your second person to follow you up; you will barely notice the wind behind your Pertex Microlight outer fabric & when you throw up the fully adjustable helmet compatible hood you have yourself a bomb proof shelter against that cold spindrift. There are two large drop pockets to stow your gloves, low bulk stretch cuffs for easy layering & a drawcord hem to seal the out the cold. This jacket is great for climbing, skiing, expeditions & any other activity where you need a compressible insulating layer. Adjustable, helmet-compatible hood Two internal drop-in storage pockets Zippered hand pockets Stretch gusseted cuffs Drawcord hem