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Flow 35L Dry Pack

Dry backpack - perfected


Sleeping Bag Temperature Ratings Explained

The EN Rating scale is a scientific test to determine the warmth of a sleeping bag. The test produces a Lower rating (for male sleepers) and a Comfort rating (for female sleepers). Both are listed in the features table on the product page.

A unisex sleeping bag with a Lower limit of 14ºF means a man should be comfortable down to air temperatures of 14ºF. The same bag will also have a Comfort limit, in the realm of 27°F, so a woman would be comfortable down to an air temperature of 27ºF. These ratings require a sleeping mat with an R-Value appropriate for expected ground temperatures – without this, the sleeping bag itself is unlikely to keep the sleeper warm enough.

A variety of factors impact sleeping bag warmth - the above temperatures are merely guidelines, not guarantees. It’s important to think of a sleeping bag, an appropriately insulating sleeping pad and a liner as a sleep system. For example - if you plan on sleeping in nighttime air temperatures of 27ºF / -3°C, choose a bag with a gender-appropriate rating of 23°F / -5°C, plus a sleeping mat with an R-Value of 2.5 to 3, and consider a Reactor thermal liner.



The Flow 35L DryPack is a tough, durable and waterproof option for wet, snowy and rainy adventures. It's made of TPU laminated, 420D Nylon with fully seam sealed construction and features a white interior lining so you can find your contents with ease. The contoured back panel, removable waist belt and deep stretchy mesh exterior side pockets mean this is also an ideal choice for commuting, mountain biking, hiking and lightweight travel. 

Read more about which dry bag/pack is right for you HERE

Technical Features

420D Waterproof Fabric

This rugged and durable fabric is used in our Big River Dry Bags, Rapid and Flow Drypacks, SUP Deck Bag and other paddle accessories. A hefty 420 Denier nylon face fabric is bonded to a bright white TPU lining, giving it a hydrostatic head of 10,000mm, as well as exceptional abrasion, tear, and puncture resistance.

Tech Specs

Product Details

Best Use
Ski Touring, Hiking, Commuting, Canyoneering
22 x 6.5 x 17 in / 56 x 17 x 43 cm
Fits Torso
18 - 22 in / 45.7 - 55.9 cm
Fits Waist/Hips
28 - 46 in / 71.1 - 116.8 cm
Frame Type
Gear Capacity
Number of Exterior Pockets
Pack Access
Top (rolltop)
Main compartment – yes. External pocket and bladder sleeve - no
43 oz / 1210g


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