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Marmot Hydrogen Sleeping Bag: 30 Degree Down

Item #MAR1118 | 28 in Stock

I can't figure out the difference between the Marmot Hydrogen...

By Ranked #480 - 55 to 30 Degree Down Bags January 7, 2009

I can't figure out the difference between the Marmot Hydrogen and Marmot Arroyo. Same temp. rating, not much difference in weight, but the Hydrogen is about $60 more. Worth the difference in price?

Helpful Votes: 0 Yes

By Ranked #275 - 55 to 30 Degree Down Bags November 11, 2009

Beyond the slightly different down rating (850 vs. 800), the hydrogen also uses a somewhat lighter denier fabric than the arroyo. I have an arroyo and a helium (15F bag that is analogous to the hydrogen), and the helium stuffs much smaller than the arroyo. IMHO the $60 difference for the hydrogen is well worth it.

Helpful Votes: 0 Yes

By Ranked #166 - 55 to 30 Degree Down Bags March 10, 2009

The biggest difference is that the Arroyo is 800 fill down and the hydrogen is 850 fill down. The hydrogen is a bit more compressible than the Arroyo but only by 1 inch in diameter and 2 inches in length. The down fill is defined as the amount of space in cubic inches one ounce of down will expand or loft up. So an 800 fill down bag means that for every ounce of fill the bag will loft up 800 cubic inches.

Helpful Votes: 0 Yes

Tech Specs:

Material:
[shell] LightForce N-120R DWR; [lining] LightForce P-100 DWR taffeta 
Insulation:
850+ fill down 
Shape:
mummy 
Draft Collar:
no, insulated draft tube 
Max User Height:
(regular) 6 ft, (long) 6 ft 6 in 
Shoulder Circumference:
(regular) 62 in, (long) 64 in 
Hip Circumference:
(regular) 58 in, (long) 60 in 
Foot Circumference:
(regular) 40 in, (long) 42 in 
Stuff Sack:
yes 
Storage Sack:
yes 
Degree:
30 F 
Weight:
(regular) 1 lb 9 oz, (long) 1 lb 12 oz 
Recommended Use:
Ultralight summer camping 
Manufacturer Warranty:
lifetime 

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