Gear up for your next high altitude or colder latitude adventure with the Alpine Down Sleeping Bag. The expedition mummy fit provides ample space for winter gear, while the modified Free-Flow Zip system provides ventilation and versatility. Complex construction throughout and 850+ fillpower, RDS-certified PFC-free Ultra-Dry Goose Down delivers maximum warmth retention.

Features

RDS-certified, 850+ fillpower goose down with a non-PFC Ultra-Dry Down treatment for maximum thermal performance
Recycled 20D nylon shell material with PFC-free DWR is light and durable
Roomy expedition mummy fit provides plenty of space for you, performance clothing and gear you don't want to freeze
Highly breathable liner for enhanced comfort
Free-Flow Zip System: Full-length zipper with half-length zipper on opposite side for excellent temperature regulation
Technical hood and footbox, efficient mummy shape and generous draft tubes on the zippers maximize warmth retention
Sea to Summit Guarantee is offered for the Lifetime of this product

Tech specs

BEST USE: Mountaineering
PERFORMANCE: Cold Climate
LOWER TEMP RATING: -20°F | -29°C
BEST USE: Mountaineering
COMES WITH: Ultra-Sil™ Compression Bag & Storage Cell
INSULATION: RDS certified, 850+ PFC free Ultra-Dry Down
SHAPE: Expedition Mummy

	-20°F REGULAR	-20°F LONG
BAG WEIGHT	3lbs 3oz	2lbs 8oz
COMPRESSED VOLUME	12.6 L	14 L
COMPRESSION SACK	26 L	26 L
FILL WEIGHT	35.3 oz	40.0 oz
FITS UP TO HEIGHT	6 ft 1 in	6 ft 6 in
TEMPERATURE RATING (EN LOWER LIMIT)	-20°F	-20°F
WOMEN'S TEMP RATING (EN COMFORT)	-2°F	-2°F

FAQ

Can two Alpines be zipped together?

No - the Alpine is only available as a left-zipper version

Can the Alpine be used in summer?

An Alpine is really too heavy and bulky to be practical for summer use (we're skeptical of the term "4-season bag")

Is the Alpine available in a size Small?

It isn't. Because of the relatively small numbers produced, we have to stay with the two most popular sizes, Regular and Large

Alpine Down Sleeping Bag

Q & A