Marmot Mountain Down

This duvet jacket uses  down insulation; reinforced shoulders and elbows; zipped, fleece-lined hip pockets; superb sleeve movement; removable hood; fleece-lined collar; snowskirt; stuffsack . But 1290g is very heavy; sewn-through construction rather than box wall.

Verdict: Buy it if you can tolerate the weight as the features and level of insulation are superb.