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Earl Grey
06-14-2008, 23:22
It seems Marmot uses this for comfort levels of their bags. Researching their 0 degree bags they have different levels according to this standard.

http://en.wikipedia.org/wiki/EN_13537

http://marmot.com/spring_2008/equipment/sleeping_bags/ultralight/lithium_reg/details

Comfort:18.3F / -7.1CTransition:6F / -14.1CRisk:-30.2F / -34.1C
http://marmot.com/spring_2008/equipment/sleeping_bags/backpacking/couloir_reg/details

Comfort:12.2F / -11.1CTransition:1.6F / -16.1CRisk:-40.3F / -40.1C
So it seems even though the bags are rated for the same temp the Couloir is more "extreme" or "robust". This would make sense as the fill power used for it is lower but it also weighs more.

So why doesnt every company use this and is it accurate?

4eyedbuzzard
06-14-2008, 23:30
So why doesnt every company use this and is it accurate?

It's a voluntary standard. Manufacturers don't have a legal duty to follow it.

Rocketman
06-18-2008, 07:50
It seems Marmot uses this for comfort levels of their bags. Researching their 0 degree bags they have different levels according to this standard.

http://en.wikipedia.org/wiki/EN_13537

So it seems even though the bags are rated for the same temp the Couloir is more "extreme" or "robust". This would make sense as the fill power used for it is lower but it also weighs more.

So why doesnt every company use this and is it accurate?

For one thing, the it is an experimental certified test and it cost a few thousand dollars. MONEY

For another thing, there are manufacturers who have traditionally "inflated' the ratings of their bags, sometimes even "underweight" weights are reported. These type of manufacturers want nothing to do with expensive experimental certified tests..... they want things to be the way they have always done.

So, it boils down to money and traditional marketing lies/distortions.

Appalachian Tater
06-18-2008, 14:03
So it seems even though the bags are rated for the same temp the Couloir is more "extreme" or "robust". This would make sense as the fill power used for it is lower but it also weighs more.The higher the fill power, the less weight it takes to achieve the same insulation. It is difficult to directly compare by weight downs with differing fill power.