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HOKKAIDO COLLECTION MARTINIQUE COLLECTION CHILE COLLECTION JAVA COLLECTION AMERICAN SOUTHWEST CHENNAI COLLECTION

ARTIST COLLAB(S)
Kohei Fujito, Keiko Yanagisawa, NISSACO Justine Fédronic Yaikel, Tomás Ives SONI IRAWAN, ARWIN HIDAYAT CHRISTIAN GERING KASHMIRA BAHETI

REGION
HOKKAIDO, JAPAN MARTINIQUE CHILE JAVA, INDONESIA AMERICAN SOUTHWEST CHENNAI, INDIA

WATER PARTNER
TO BE ANNOUNCED GLOBAL WATER PARTNERSHIP CARIBBEAN FUNDACION AMULEN GREENERATION DIGDEEP ENVIRONMENTALIST FOUNDATION OF INDIA

Each Janji collection is inspired by a different part of the world where we collaborate with local artists on our prints + graphics.

2% of all collection sales are donated at the end of the season to our clean water partner to give back to the region that informed the designs.


Made to run everywhere + purpose-built for the path ahead

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Thermalrunner Insulated Jacket

Thermalrunner Insulated Jacket

Lightweight, strategic insulation provides extreme warmth in a packable, all-weather jacket

COLOR >>  
M's Thermalrunner Insulated Jacket
size >>
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Hurry, only 3 left in stock!

Size Guide

THIS PRODUCT IS ONLY AVAILABLE TO JANJI COLLECTIVE MEMBERS

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JOIN JANJI COLLECTIVE

THIS PRODUCT IS ONLY AVAILABLE TO JANJI COLLECTIVE MEMBERS

Join now to unlock access

JOIN JANJI COLLECTIVE
run everywhere guarantee
free shipping over $75
free 60 day exchanges
Malik is 5'10" // he wears size M Regular fit, Size Chart

Backed by our 5-year Guarantee

We make gear that lasts. If your Janji gear doesn't due to any defect in workmanship or material, we promise to repair it, replace it, or give you store credit for it. Learn more

2% for clean water

2% from this purchase will be donated to support clean water projects in the places that inspire us. Learn more

Winter protection without the bulk – Janji's Thermalrunner Insulated Jacket features targeted insulation for warmth where you need it, and only where you need it. Read more

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features

Strategic warmth
 Targeted panels of 40g PrimaLoft® Gold Active Insulation provide warmth where you need it most

Multi-condition preparedness
Hyperlight, durable nylon shell is water-resistant and wind-blocking for whatever the trail may bring

Ready for anything
Stows into chest pocket for easy packability

Secure fit
Bungee hem allows for an adjustable fit on the fly, reducing exposure in windy conditions

Keep it separated
2 zip hand pockets and a zip chest pocket stash small essentials close at hand

Comfortable coverage
Zipper garage protects chin and neck

Visibility
Signature reflective logos for improved visibility in low light

materials + specs

Zephyr
100% nylon with PFC-free C0-DWR (durable water repellency)

PrimaLoft Gold Insulation Active
100% nylon (45% recycled)

Weight
136g / 4.4oz (M’s Medium)

Garment made in Vietnam

CFM is the rating that measures how windproof a fabric is - 0 is totally windproof. With a CFM of 16, our Zephyr fabric cuts most wind while staying highly breathable - ideal for running performance.

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Janji Collective Membership

$25

Key member benefits:
- 15% lifetime discount.
- Priority access to all releases.
- Limited run Janji gear.

Janji Collective Membership

Key member benefits:

- 15% lifetime discount.

- Priority access to all releases.

- Limited run Janji gear.

Please enter the gift recipient's contact info

The $25 membership fee goes toward supporting clean water initiatives through our clean water partner

Learn more here

Customer Reviews

Based on 22 reviews
73%
(16)
14%
(3)
9%
(2)
5%
(1)
0%
(0)
N
Nader

Lightweight, warm, comfortable.

M
Michael M.
Wear it for: Running
Product Fit: Spot-on
Height: 5'10" to 6'0"
Usual Size: M
Size Purchased: S
Thermal running jacket

Bought for very cold winter runs ( 20’s & teens) here in NJ. Temps haven’t been this cold yet. Used in 30’s and worked great with single layer underneath. One run was in the 40’s and got too warm. Wish it had vents for those days when it starts out cold and warms up quick. Love the pockets for shedding gear. Fit perfect based on description. Will be trying it for mountain biking. I too, thought it was to thin to be warm, but it is!

L
Loren T.
Wear it for: Running, Hiking
Product Fit: Spot-on
Height: 5'7" to 5'9"
Usual Size: L
Size Purchased: M
Warmer than I would have guessed

I have been searching for a new running jacket for several years. But, I have not found anything that I liked as much as my 10 year old jacket. I tried the Thermalrunner. When I first took it out of the bag I almost sent it back without trying it because is was so light that I couldn’t imagine it being warm. I run cold. I do not like cold. In fact I am comfortable running marathons in 80 degree but feel miserable in 50 degrees. (I know that is way out of the normal zone.). I get cold at 45. So I first tried this jacket with running sleeves an a t-shirt when it was 44 degrees. I was actually hot. Then the same set up for 40. Also hot. Later I tried just the jacket for a run when it was 43 and I was very comfortable. Not to make too much of this but yesterday I did a 12 mile run on trail wearing this jacket, sleeves, t-shirt, hat and gloves in 36 degree weather. I was quite warm. I am sold. It is very warm, even for a self confessed weenie about cold weather. And, due to its weight and packability, it will become my backpacking jacket. I love it and was very pleasantly surprised.

J
Jonathan L.
Wear it for: Running, Everyday wear
Product Fit: Spot-on
Height: 5'7" to 5'9"
Usual Size: S
Size Purchased: S
Lightweight and Warm Jacket

I bought this jacket because I was specifically looking for a jacket that I would be comfortable wearing both on runs and in my daily life. It's light enough to not weigh me down during runs and warm enough that my core doesn't feel chilly even in cold weather. The dual zippers are also really handy for adjusting the look and fit on the fly.

M
Martin R.
Wear it for: Running
Product Fit: Spot-on
Height: 5'4" to 5'6"
Usual Size: M
Size Purchased: M
Keeping a Texan warm during a TX freeze

I hate to complain about the cold living in TX, and this jacket has made it easy to keep my mouth shut. My favorite new addition to my winter gear.

M
Michael I.
Wear it for: Running
Product Fit: Spot-on
Height: 5'10" to 6'0"
Usual Size: M
Size Purchased: M
Jacket

Perfect fit and great for running in under 40f. Like zipper action.

D
Damon G.
Wear it for: Running, Everyday wear
Product Fit: Spot-on
Height: 6'3" or taller
Usual Size: L
Size Purchased: L

Fits true to size. Jacket is very light weight and much warmer than you would expect for something this thin.

s
skc
Wear it for: Running
Product Fit: Runs large
Height: 5'10" to 6'0"
Usual Size: M
Size Purchased: M
Light in wright but warmer, well designed

I have struggled to find the right cold weather running jacket, this is as close as I can get, it gives you enough protection and insulation. Still, the challenge is always getting enough breathability. But this seems to be the best I can find.
.

F
Felipe V.
Wear it for: Running, Everyday wear
Product Fit: Spot-on
Height: 5'7" to 5'9"
Usual Size: XS
Size Purchased: S
I love the jacket !!

I like everything about the jacket, the only thing that it will make it perfect is that it needs to be about 3 inches shorter. I have a NB and a Nike that are not as nice but the length is right.

O
Old M.J.
Wear it for: Running, Everyday wear
Product Fit: Spot-on
Height: 5'7" to 5'9"
Usual Size: S
Size Purchased: M
Great for layering

Super lightweight, with insulation selectively placed on the jacket (not in the middle of the back for example). Great as an extra layer of warmth on top of the hoodie I usually run with (the Rover).

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