Rab Ascent 0 Sleeping Bag

$390.00 – $410.00

For backpacking in cold weather, this Rab down sleeping bag provides reliable warmth. It has a wide mummy shape and roomy footbox for sleeping comfort. The 650-fill-power down is light and warm.

Fill

650-fill-power European duck down

Weight

Regular - Left Zip: 3 lbs. 10.2 oz.

Long - Left Zip: 3 lbs. 12.32 oz.

Temperature Rating (F)

0 degrees (F)

Filled with 650-fill-power down
L.O.F.T.™ baffle technology reduces down migration, optimizing heat retention and reducing the packed size
Sidewall baffle construction increases down loft and provides greater side-sleeping comfort
Shell is made with 20-denier Pertex® Quantum fabric
Anatomically fitted hood with a drawcord adjustment to maximize comfort and heat retention
Internal cordlocks positioned below the collarbones for greater side-sleeping comfort
YKK® zippered internal stash pocket
3D shaped neck collar is filled with recycled Stratus™ insulation
2-way YKK® 3/4-length main zipper with synthetic-filled baffle
YKK® antisnag zipper insert and antisnag internal zipper guard
YKK® zippered arm access vent with integrated snap closure retains heat during tent-based tasks
Anatomically shaped footbox for a relaxed sleeping posture
Wide mummy shape
Drawcord stuff sack included
Zippered storage sack with a water-resistant base for home storage

Imported.

Temperature ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth, since many different factors contribute to your comfort while you sleep. Backpacking bags are typically rated for temperature according to an independent testing protocol—currently International Organization for Standardization (ISO) 23537, though some older items followed European Norm (EN) 13537. Testing is based on a person wearing one base layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38.

Each bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.

View all Rab Backpacking Sleeping Bags

Best Use	Backpacking
Tested Lower Limit	0 degrees (F) - ISO
Tested Comfort	14 degrees (F) - ISO
Temperature Rating (F)	0 degrees (F)
Temperature Rating (C)	-17 degrees (C)
Weight	Regular - Left Zip: 3 lbs. 10.2 oz. Long - Left Zip: 3 lbs. 12.32 oz.
Shell	20-denier Pertex® Quantum ripstop, 38 g/m²
Zipper Location	Left
Insulation Type	Down
Water-Resistant Down	Yes
Fill	650-fill-power European duck down
Fill Weight	Regular - Left Zip: 1 lb. 15 oz. Long - Left Zip: 2 lbs. 0.63 oz.
Sleeping Capacity	1-person
Lining	Recycled 20-denier nylon, 38 g/m²
Sleeping Bag Shape	Mummy
Fits Up To (in.)	Regular - Left Zip: 72.8 inches Long - Left Zip: 79 inches
Shoulder Girth (in.)	Regular - Left Zip: 63 inches Long - Left Zip: 68 inches
Hip Girth (in.)	Regular - Left Zip: 52.8 inches Long - Left Zip: 56 inches
Stuff Sack Size	10.24 x 17.72 inches
Stuff Sack Volume	Unavailable
Compressed Volume	Unavailable
Gender	Unisex