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We added carbon fiber heating elements to a technical puffy, and the Ectotherm was born. Powered by your bike’s 12V battery for heat that lasts as long as the ride.

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Ectotherm Insulated 12v Heated Jacket

Ectotherm Insulated 12v Heated Jacket


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.

The Ectotherm is your solution for staying sane and happy when the weather turns brutal. The name comes from Ectothermic, a scientific term for animals that exchange body heat with external sources. Like a lizard basking on a hot rock.


Unlike conventional heated liners the Ectotherm is a fully functional stand-alone synthetic insulation layer. By combining the functionality of a technical puffy and a heated liner we’ve added even more performance and versatility to a layer that we rarely leave home without. Now you can enjoy the comfort of onboard 12V heat without over burdening your pack space. Pair it with heated grips and hand-shields to create the ultimate minimalist heat system for backcountry and RTW travel.

Built with 100g of PrimaLoft Gold Insulation with Cross Core Technology at the core and 60g in the underarms to reduce bulk under armor, the Ectotherm is well equipped for any cold weather trip. This high-tech insulation combines PrimaLoft Gold, with aerogel technology, to provide up to 52% more warmth than the same weight of PrimaLoft Gold Insulation alone. This enables us to achieve both enhanced warmth and decreased weight. Integrated directly into the fibers, aerogel further enhances the performance of synthetic insulation. Now not only will it perform better than down when wet, it will also perform better when compressed under armor.

To further battle the chill of riding in the cold, we added 6 thin, flexible carbon fiber heat panels in the collar, arms, left and right chest and back. Activate the heat with a hem mounted controller to toggle through 3 levels of 3.5amp/42w heat to maximize comfort. The system is powered by your bike’s 12V battery (wiring harness included) for heat that lasts as long as the ride. When it comes to cold weather riding the Ectotherm Insulated 12v Heated Jacket is a powerhouse of comfort when pushing the boundaries of riding season.

  • Six thin, flexible carbon fiber heat panels (collar, arms, L/R chest, back)
  • 12v/ 3.5 Amps/ 42w. Three levels of heat – low - 38°C/100°F, medium – 45°C/113°F, high - 52°C/126°F)
  • Stowable, easy access control tab
  • Powered by 12V motorcycle battery (battery harness included)
  • Simple one-wire, coax connectivity to bike
  • Body-mapped PrimaLoft Gold with Cross Core Aerogel Technology (100g in body, sleeves, 60g in underarm/gusset)
  • Two zippered hand pockets, one zippered chest
  • Left-hand pocket converts into a stuff sack
  • Elastic cuffs
  • Stretch woven thumb loops
  • Articulated fit
  • High-performance DWR (Durable Water Repellent)
  • Weight of garment: 1.57lbs / 0.7kg (size L)
  • Ethically produced in Bangladesh
  • Face Fabric - 100% Nylon Ripstop 30d x 30d 45g/sm
  • Lining Fabric - 100% Nylon 30d 44g/sm
  • 100g PrimaLoft Gold with Cross Core Technology (Body)
  • 60g PrimaLoft Gold with Cross Core Technology (Underarm/gusset)
  • C6 DWR (Durable Water Repellency)
  • YKK Zippers 

The Ectotherm is designed to be worn under body armor - if you want to wear it over armor, please size up. 
All measurements are BODY measurements.

  • Size Guide
  • Model is 6ft, 175 lbs, and wearing a size L



Product Care

Visit our Help Center for Product Care info.


We never cut corners during development or manufacturing, so we stand behind our products. If one fails due to a problem with materials or workmanship, we’ll make it right. All Mosko Moto products include:

Limited Lifetime Warranty

'Limited' means it does not cover:

  • wear & tear
  • neglect/misuse/abuse
  • aesthetics
  • sun degradation
  • modification and/or use for a purpose other than what the item was designed for

Crash Care Program

Pair With

Check out our Protection Collection for upper body armor and be prepared for all kinds of weather with the Basilisk Jacket or RAK Pullover

Customer Reviews

Based on 149 reviews
Ectotherm Jacket

Used the jacket on mid Atlantic bdr and was very happy to have it. Great quality and utility.

Parker Klassen
This thing gets hot!

Standard high quality gear from Mosko! Havnt gotten to try it on the bike as there is still snow but it gets HOT!
You can run it from the Milwaukee M12 batteries or cheap 12v battery packs from Amazon but it doesn't last that long, still great for a warm up while working outside in the Canadian winter.
Heaters on arms, chest, back and neck keep you toasty warm! It is significantly hotter than the Milwaukee heated products.

As soon as I can get the bike out of the shed I'm fairly confident I would be toasty warm riding in the cool Canadian spring weather.

Last jacket you’ll ever buy, but….

In the middle of a trip across the US, began at 30 degrees F, currently at 88 degrees F. On the way home I’ll be back in the low 30’s with a chance of snow. In the 30 degree temps I was wearing a Mosko mesh shirt, my ectotherm and my armored jacket/pants. On the lowest setting I was toasty warm (heated grips and seat also). Once the temps climbed I took the ectotherm off, rolled it up inside its own pocket and packed it away, very little space used in my Mosko panniers and duffle. Only complaint is if a “upside down pocket” was used to store the cord instead of a small loop, it would be perfect! I like how the control button hangs low, because I can control the temp while riding because it hangs lower than my armored jacket.


I liked the style of the jacket but it seems to run a bit small. I wear size large in all my jackets but the sleeves are a bit short on this one.

Lonnie Toby
Ectotherm 12v heated jacket

I absolutely love this jacket. It has made my winter riding so much better than last year. It fits perfectly.