M's Thermalrunner Insulated Jacket

packable, PrimaLoft® insulation, PFC-free water resistance

30 reviews
$198

Color: Midnight
Size

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.

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

Customer Reviews

Based on 30 reviews
77%
(23)
10%
(3)
7%
(2)
7%
(2)
0%
(0)
R
Ronald K.
Wear it for: Running
Product Fit: Spot-on
Height: 5'10" to 6'0"
Usual Size: M
Size Purchased: M
Perfect Jacket for Cool Runs

I’m located in Northeastern Pa. This jacket has been perfect for the cool fall runs. Even the cold winter ones with layers. I’ve been very happy with it.

M
Mike M.
Wear it for: Running
Height: 5'10" to 6'0"
Usual Size: M
Size Purchased: M
Perfect running warmth!

It is warm, but not too warm...just right!

V
Val M.
Wear it for: Running, Hiking, Everyday wear
Product Fit: Spot-on
Height: 5'1" to 5'3"
Usual Size: M
Size Purchased: M
Best jacket for cold weather running and hiking

Nice fit, warm, enough pockets and great quality

J
Jim W.
Wear it for: Hiking, Everyday wear
Product Fit: Spot-on
Height: 5'10" to 6'0"
Usual Size: L
Size Purchased: L
Great, Great Jacket

This jacket is perfect! I use it for hiking, my daily three mile walk, and everyday use. Three zippered pockets and 40 grams of insulation complete the package

V
Vincent S.
Wear it for: Running, Cycling
Product Fit: Spot-on
Height: 5'7" to 5'9"
Usual Size: M
Size Purchased: M
What a great jacket

First use was for a bike ride, and I was suitably impressed with how it kept me comfortable while riding. Have used it on a number of runs lately, with varying distances and tempos. It did not disappoint - this one is definitely worth it.

A
Andrew
Wear it for: Hiking, Camping, Cycling, Everyday wear
Product Fit: Spot-on
Height: 6'3" or taller
Usual Size: L
Size Purchased: L
Perfect jacket for so many occasions

I'm not one to run in a jacket like this, but for practically everything else I do in my day, this is my grab and go! Lightweight but warm, compactable, and makes me look like the coolest dude wherever I am!

L
Lou M.
Wear it for: Running, Hiking, Camping, Climbing, Cycling, Everyday wear
Product Fit: Runs small
Height: 5'10" to 6'0"
Usual Size: M
Size Purchased: L
10 out of 5 stars!!

Ultra light, ultra soft, block wind and light rain, great weight to warmth ratio, will want to keep it on all the time, but one size bigger to fit 2-3 under thin layers in very cold. Otherwise, only need an ultra light 1 layer for cool and cold days. The reflective snow leopard print is fantastic!! I have two of these jackets. One medium and one large, so I can fit several layers for coldest days with the large, and fit 1-2 very thin layers with the medium. Exceptional jacket! Definitely one of Janji’s best overall products. Consider the snow leopard reflective. Very cool, unique, and great looking.

N
Nader N.

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.