The ultimate Banff belay jacket the Ms Megaplume Jacket is a toasty warm treat when temperatures take a dive The 650 fill down is extremely warm but compresses for stowage in your pack for when winter sun warms you up The ultralight waterproof Pertex Endurance shell keeps you dry when you are showered with spindrift and an oversized hood fits effortlessly over a helmet without pulling or restricting visibility Avg weight 329 oz931 g size L