See also:
Heated 12v jackets
Updated March 2025
IN A LINE
Warm and smart puffa jacket with built-in controller which almost makes the 12v heating redundant.
WHERE TESTED
Chilly December mornings on Jebel Saghro, then plugged in for a very chilly morning in the High Atlas up to 2200m/7200′ but not below freezing. Then back across chilly Spain (above freezing).
COST & WEIGHT
Currently the revised v2 version is €395. My 2021 v1 jacket supplied free for review by Mosko. Weight 672g + battery wiring lead.

- A smart, wearable puffa jacket, not just a wirey liner
- PrimaLoft insulation is warm and compact – and ‘body mapped’
- Packs into its own pocket
- Three useful pockets
- Looks cool; no naff graphics
- Thumb hooks to get snug on the arms
- It’s not black!

- Controller function unexplained on v1
What They Say (v1)
We added carbon fiber heating elements to a kick-ass technical puffy, and the ‘Ectotherm’ was born.
When you’re sitting around the campfire or lounging in your tent, it’s a super warm insulator with 100g body-mapped synthetic PrimaLoft Gold insulation with Cross Core Technology. Connected to the bike, it adds a 6-panel carbon-fiber 3.5Amps/42w heating system powered by the bike. That extra warmth takes the edge off long, cold, wet, pavement stretches, keeps you warm on high alpine passes, adds new enjoyment to early spring and late fall trips, and ensures you’re ready for anything a multi-year/multi-season RTW journey can dish out.
REVIEW
Riding for a week up to 2200 metres in December 2023, I was pretty sure I’d need my Ectotherm. Around Nekob (1000m) the forecast was down near zero some mornings, but by leaving for my day rides two hours after sun up, I dodged the most biting chill. In the end, used under my quilted Carhartt riding coat and over a merino long-sleeve top, by the afternoon, even unplugged the Ectotherm became too warm and got stashed.



Only on the last day, heading over the High Atlas via a high-elevation route at close to zero did I plug the jacket in. I assumed like my previous heated jackets the Ectotherm would have no temperature controls, so used my old dial-operated Heat Troller (above left).
No heat that I could tell so I rummaged around by the jacket’s output and noticed an on-off button which it turns out, has three levels of heat. It cycled red, orange, green then went out. Was it on now? Full power or low?
I know 12-volt heated jackets are not night and day, but you sure notice when you turn them off. I stopped again to fiddle with the button and at one point definitely had the impression of warmth across my back. I notice that it’s rated at 42w where my Aero was 75w and the Powerlet 60/105w. But they used wires, not carbon fibre panels which you like to think need less power to do a similar job.
Whatever the heating technology, with these jackets close fit pressing down on your body greatly increases efficiency, which was why Aerostich’s inflatable bladders where actually a clever idea for maximum efficiency. On other jackets I’ve wrapped straps around myself to press it down on freezing rides across northern Spain in winter. The Ecto was helped a little by my Kriega Trail 18 pressing on the coat.
I did also wonder if wearing something thinner than my thick Ice Breaker merino may have produced better conductivity, but by that time I was over the highest cols and working my way west to Zerkten. A little disappointingly, the day had proved to be nowhere near as cold as forecast.
So, not a conclusive test of the Ectotherm’s heating ability which I bet is in there somewhere. I need to find out how those buttons sequence (nothing in the online blurb. I contacted Mosko: no reply. But see Colin’s comment below) and may be able to dispense with the Heat Troller (which might also be affecting the output).
Fyi; all is explained on the v2 model.

One thing’s for sure though: as a regular puffa the Ecto works very well (though at a price). It’s a smart garment you can wear off the bike, not a liner that just takes up space when not in use, or has little sartorial value when not plugged in.
Whatever the carbon fibre heating panels are, they’re unobtrusive; only the LHS pocket with the wires and the control button adds any bulk.
March 2024 I rode my CRF back home but didn’t think I’d need the Ecto. Spain was as cold as I’ve been on a bike in many, many years. Even wearing all I had plus regular stops for hot food and drinks, I could feel myself going weird following sleet showers towards the end of the day. Another example of my minimalism turning round and kicking me in the nuts!

Test 2 – 2024-25
I’d not given up of the Ecto, and in November 2024 set off across Spain on my CF Moto with the 12-v Mosko puffa under my thin Mosko Surveyor. By February 2025 I was back for more; winter 24-25 was a lot chillier in Morocco and I wore the unplugged Ecto every day, even down in the desert, along with my AD-1 over-trousers.


Coming back across Spain late February, I knew I’d need to plug it in, and this time did so direct – without the heat controller. For some reason, this time the operation of the Ecto’s built-in controller tab became intuitive: a long press for on, then short jabs until red (max) came up.
For the leg north of Madrid, the Ecto sure made the day more bearable. It wasn’t freezing at around 800m, but the 100-kph wind chill made it feel like it. This time I was wearing an old Klim Aggressor base layer, plus a shirt and the skimpy Mosko Surveyor jacket over the top.


This was much more like it, even if at times the thing either auto switched off or went to a lower setting. Riding along you can just about grab the controller tab and check that the red icon is glowing reassuringly. I rolled into a Picos mountain posada, chilled but not stir-crazy with cold.
Two days later it was another brisk late-night ride off the Portsmouth boat, which a pair of proper, intact gloves would have made more bearable. I counted off the landmarks until I was home, numb fingers fumbling with the keys. Riding along I thought: heated grips or 12-v jacket. Both are allowed, but I think 12-v jacket trounces the grips. They say a warm core supplies blood to the extremities better than grips warm the core. I’ll be keeping my Ecto until the ice caps melt.
Read about the v2 Ectotherm here.













































