Big Agnes Yampa 40°


fall 2010 regular long
Weight 1 lb 14 oz / 850 g 2 lb 2 oz / 960 g
Fill weight 9.5 oz / 270 g 10.5 oz / 298 g
Temperature rating 40 F / 4.4 C
Fill 650 fill down
Shape rectangular
Max user height 5 ft 10 in / 180 cm 6 ft 6 in / 200 cm
Shoulder girth 70 in / 180 cm 73 in / 190 cm
Hip girth 66 in / 170 cm 69 in / 180 cm
Foot girth 54 in / 140 cm 55 in / 140 cm



I purchased this Yampa to replace a worn Marmot bag.

Rating: rated 5 of 5 stars
Price Paid: $170

I purchased this Yampa to replace a worn Marmot bag. It is extremely lightweight and durable. It has been on many trips with me, it has kept me quite comfortable down to about 32F.

What I like the most is that it is not a mummy shaped bag and affords me a lot of extra leg/body room. I purchased the long size (78"?), but I probably could have sufficed with the regular 72" length (I am 6'). It added a bit of extra weight, but well worth it.

One drawback - I owned a BA 25" down insulated sleeping pad. This size bag will only fit a BA pad up to 20". thank God I purchased from a locally owned outdoors shop (Ozark Outdoors), and they gave me a great deal with a trade in.

Overall: well worth the price and outperforms many of the bags that are easily twice the price.

Big Agnes Yampa 40°


The Yampa 40° has been discontinued.

previously retailed for:
$95.97 - $184.95

The Big Agnes Yampa 40° is not available from the stores we monitor. It was last seen November 5, 2013 at

If you're looking for a new warm weather down sleeping bag, check out the best reviewed current models.

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