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View all 4 Season Sleeping Bags from Marmot
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One of the world's lightest sub-zero bags, the Helium is filled with the finest mature goose down to create a bag that weighs under 1kg, if weight, packed size and Premier League performance is your priority, stick a Helium on your shopping list.
Marmot Helium Reviews
Reviewed by David Lundberg (Canada) on 2006-04-01:
General comments: If you are looking for a down bag, that takes in mind weight, size and durability. This is it! I have had my Helium for about 3 seasons now, and it is the best bag I have ever owned for cold weather when moisture is not going to be an issue. I have lost some of the loft and the light weight goose down they use tends to work its way throught the bag every now and again. It is as warm today as when I first got it though. You pay for what you get , this bag is for the guy or girl that takes weight into consideration for everything they do. On my scale the bag in a stuff sack comes in at 2 lb 1oz (0.95 kg) which is a very, very respectable weight. My 6' 1" frame fits into the Long just fine with a tonne of room in the shoulders for the person who likes to roll around alot. (ME). the foot box is quite large as well and I have not developed any cold spots as of yet
Pros: light, warm, compressable into the size of a loaf of bread
Cons: durability of the insulation although good it is an expensive bag that you probably will get 5 good seasons out of before the temp rating is comprimised.....expensive bag.