Trying to decide between a down vs synthetic sleeping bag? Our rankings of the best sleeping bags and the best lightweight sleeping bags include both, and both have their pros and cons. In this guide, we'll run through the things you need to know about both types, as well as any extra things to look out for, to help you make your choice.
Down sleeping bags: pros and cons
Down sleeping bags offer lightness and unparalleled warmth, which means you're getting a lot of bang for your buck. However, down also takes a bit of looking after – you need to store it uncompressed, to retain the loft, for example.
There's another major down-side to down: the opportunity for you to catch hypothermia if they get soaked. Why? Down absorbs the water, clumps together and provides no insulation when wet. Down bags have evolved a wide range of waterproof coatings and down treatments to try and stave off the damp problem, but these are sometimes only partially effective, and the treatments often lose their potency over the years. So you'll need to make sure you keep your down sleeping bag away from condensation and securely covered up if the heavens open.
With down bags, pay attention to the baffle construction, as better sleeping bags employ a range of funky shaping tactics to avoid all the down clumping together at one end, and to prevent cold spots forming between the pockets.
Also keep a sharp eye out for ethical down, down quality (cheaper types will include duck), and fill power. The latter is a measurement of the ‘loft’ you’ll get from 1 gram of down. Better quality down will ‘loft’ (fluff up) better than cheap down, giving you more insulation per gram.
- Browse the best hiking boots for men
- ... and the best women’s hiking boots
Synthetic sleeping bags: pros and cons
On to the second half of our down vs synthetic sleeping bag face-off. Synthetic bags tend to be heavier for the same warmth rating on a down bag, and are usually bulkier in pack terms, but will see you right in the dampest scenario. Artificial down materials like Thinsulate mean that even the wettest synthetic bag will insulate you.
There are a host of materials that try to strike a balance between weight, durability and warmth, so it’s worth looking at a few. On the other hand, synthetic fill bags suffer from de-lofting over time, which reduces their warmth.
Sign up to the T3 newsletter for smarter living straight to your inbox
Get all the latest news, reviews, deals and buying guides on gorgeous tech, home and active products from the T3 experts
- Best action camera for outdoors use
- The best cheap action camera
Mark Mayne has been covering tech, gadgets and outdoor innovation for longer than he can remember. A keen climber, mountaineer and scuba diver, he is also a dedicated weather enthusiast and flapjack consumption expert.
-
Smart holiday lights: are they worth it?
With Christmas right around the corner, smart holiday lights are a good way to spice up your house inside and out
By Max Slater-Robins Published
-
Forget The Rings of Power – Prime Video's best fantasy show is coming back
The Wheel of Time is still turning
By Max Freeman-Mills Published
-
YETI Camino 20 Carryall review: a handy camping companion, especially for waterproofs
I’ll never go camping without the YETI Camino 20 Carryall again
By Bethan Girdler-Maslen Published
-
The YETI French Press is exactly what I needed on my last camping trip
YETI’s new French Press is the perfect companion for camping and hiking trips
By Bethan Girdler-Maslen Published
-
Big Green Egg vs Kamado Joe: the ultimate Kamado ceramic grill showdown
Both of these BBQ brands occupy the premium tier but which one tickles your fancy?
By Derek Adams Published
-
5 expert-approved tips to help you sleep on a camping trip
How to get a good night’s sleep on a camping trip, according to experts
By Bethan Girdler-Maslen Published
-
YETI launches its most outdoorsy collection yet but the colour has divided customers
YETI launches new Wetlands collection – but I’m not sold on the colour
By Bethan Girdler-Maslen Published
-
Weber vs Char-Broil: which is the best barbecue brand for you?
Summertime and the grilling is easy with a Weber or CharBroil barbecue
By Derek Adams Published
-
Traeger vs Masterbuilt: battle of the best smokers
Two leading smoker manufacturers go head to head for Pit Master supremacy
By Derek Adams Published
-
How to make the perfect outdoor dining space using smart lighting
Philips Hue have got your back!
By Lizzie Wilmot Published