CUMULUS Quilt 350

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CUMULUS Quilt 350 is ideally suited to the spring and autumn camps. In this version, Cumulus incorporate a zipper in the bottom part of the quilt - this way you can ventilate your legs, if you have such need, or fully open the quilt and use it as a blanket.

Especially during warmer nights it can be used as regular bedding, enough for two people, or it can be fixed to the mattress and used instead of sleeping bag. Its open design ensures that the insulation properties of the down are utilised to their fullest, without restricting movement, making it an ideal solution for those who dislike confined spaces. Yet another advantage is the new way of attaching it to a mattress, far more conveniently than before.

Used together with a Therm-a-Rest mattress the Quilt 350 roughly corresponds thermally to model Lite Line 400, making it suitable for use at temperatures near freezing. This product has all of the advantages characteristic in this series, the most important of which its very low mass in ratio to the amount of down filling used. Manufacturer used Pertex Quantum fabric here weighing 29 g/m² and the highest quality 850 cuin Polish goose down.


Total weight: 600 g (660 g long version)

Down weight: 350 g (380 g long version)

Weight of unfilled sleeping bag: 250 g


Fabric: Pertex® Quantum DWR, 29 g/m²

Filling: Polish goose down, 850 cuin


Comfort temperature: 2 ˚C

Limit temperature: -4 ˚C

Extreme temperature: - ˚C


Construction: Box structure (“H” chambers)

Continuous baffles

YKK zip at the bottom allowing to create a footbox with two self-locking sliders

The zipper can be opened at the bottom for better ventilation

Additional, large mesh bag to store your sleeping bag at home

Full length, down-filled, zip insulating baffle

Open footbox construction with insulated draw cord

Can by fully opened and used as a flat blanket


Maximum user height: up to 185 cm / up to 200 cm - long version

Length: 195 cm / 210 - long version

Width (top/bottom): 70/50 cm / when flat: 140/100cm

Stuffsack’s dimensions (height/diameter): 24/16 cm

Stuffsack’s volume: 4,5 l

Number of down chambers: 13

WARRANTY: 10 years



Data sheet
Down quality850 cuin (EU)

Quilts have their followers who find them useful and also their opponents. Of course everyone is different and has different priorities.

Some people feel much warmer having something wrapped around entire body. They feel more comfortable in sleeping bags and think that the extra weight of a full bag is worth it.
Quilts appreciate people who wants saving weight especially on long trails, where every gram is counted and your knees, ankles and back will thank you every step of the long way. They sleep much more comfortable in quilts and use its advantages....

What are the benefits of quilts?


People mainly choose quilts rather then sleeping bags, because they want to save the weight and carrying full weight of sleeping bag is unnecessary weight carried for them.
Compressed down or synthetic insulation under your body on the bottom of a sleeping bag provide no insulation and therefore can not store warmth. If you have good sleeping pad for insulation to the floor then compressed bottom insulation is useless and not needed. This will save the weight, because no insulation wasted under you.
Quilts are also lighter  then sleeping bags because of missing zipper and hood.


Quilts are obviously cheaper because of less down, less fabric, no zipper, etc


People love quilts for the freedom of movement. Many people who sleep on sides or on stomach have found quilts to be better solutions compared to bags. You can move as much as you like under it. If you dislike sleeping in mummy bags, beacuse it is too tight and uncomfortable for you, then sleeping in quilt will be much better for you.


You can choose and wear whatever you want under it to suit temperature. You can wear whatever you want on your head for warmth and not get smothered in the hood. You can use your warm clothing to extend the comfort temperature of a quilt then it's also nicer to get out of because you don't lose all your insulation when you crawl out, so you don't freeze half naked in the tent while you try to get dressed.


Quilts are more efficient and have a high warmth to weight ratio. Why? no insulation wasted under you, no fabric weight directly under you, no hood weight, no zipper weight.


Simply shape and no zipper to fail (weight saved). Because quilts are simpler you can make your own more easily than a sleeping bag.


Depending on style many quilts can be laid flat or formed and sealed around you. Adding features: wings, loops, straps on the sides, velcro strips or elastics to form a footbox, draw cords or drafts stoppers help you to adapt it to your actual needs and conditions. Some quilt have some type of footbox (sewn or can be formed) to keep your feet warm if it gets cooler.


Use it as top quilt, underquilt in hammock or as a coat. Possibility to use it inside of a classic sleeping bag in order to improve insulation. For home use: expect serious heating savings!

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