Cumulus Alaska 1300

Extreme cold sleeping bag, comfort temperature -19°C, duck down filling. For winter bivouacs and demanding expeditions.
€549.00

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Availability: In stock & Available in our store

The opinion of Aventure Nordique

The Alaska 1300 from Polish brand Cumulus is a four-season sleeping bag. Lightweight, durable and comfortable, it is ideal for very cold and harsh conditions. The comfort temperature is rated at -19° Celsius and it weighs 1,865 grams.


The 1,300 grams of 700 cuin Polish duck down filling provides pleasant warmth. The H-shaped double chamber construction is ideal for extreme cold. It prevents thermal bridges and allows the down to expand fully. The upper chambers are filled more than the lower ones, which are compressed when you lie down. For added protection, the Alaska has an adjustable hood, a removable collar, a fitted mummy shape and protection along the entire length of the zip.


The 35 g/m² Pertex Quantum fabric is durable and water-repellent. It features a full-length YKK zip, inner fabric protection and a self-locking system. The double slider allows you to ventilate at the feet when temperatures rise.


An inside pocket keeps your phone or any small items close at hand and warm. Two loops at the feet allow you to secure or hang (to dry) the Alaska. Comes with two covers: a large one for storage at home and a small one for transport in a rucksack or pulka.

Points to remember

1,300 grams of duck down in this sleeping bag and a construction designed to withstand comfort temperatures down to -30°C and 1,865 grams.

Technical details

Brand Cumulus
Product name Alaska 1300
Season 4 season
Model Unisex
Fill Duck Down
Cuin 700 cuin
Comfort rating -19°C
Comfort Limit -30°C
Extreme rating -53°C
Dimensions Length: 210 cm - Maximum user height: 190 cm
Shoulders - Hips - Feet: Width (top/bottom): 85/59 cm
Folded size 40 x 23 cm - Cover volume: 16 l
Outer shell Pertex® Quantum 35 g/m², ripstop 20 deniers, finition DWR (100 % nylon)
Inner lining Pertex® Quantum 35 g/m², ripstop 20 deniers, finition DWR (100 % nylon)
Fill Weights 1300 g
Weight 1865 g
Additional information
    • Number of duvet chambers: 44
    • Construction: H-shaped double rooms
    • Separate lining for the top and bottom of the sleeping bag
    • Separate 175 cm YKK zip with two self-locking sliders
    • Possibility of opening and ventilating the lower part of the sleeping bag
    • Can be attached to other sleeping bags, including other models.
    • 2 insulated down tunnels with zip fasteners
    • Detachable down collar
    • A 3D hood, adjustable with an elastic band equipped with a stopper
    • Pocket inside the sleeping bag
    • A large additional cover for storing your sleeping bag at home

Warranty Lifetime
Country of Manufacture Poland

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