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Thermal Zephyr Runner Jacket

Thermal Zephyr Runner Jacket

COLOR  
W's Thermal Zephyr Runner Jacket
size

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Regular fit, Size Chart Gabby is 5'8" and wears size S

With nylon ripstop and a water repellent finish, the Janji Thermal Zephyr Runner Jacket provides nearly weightless warmth in a small, easily stowable package for chilly trail adventures.Read more

Explore more

Nearly weightless warmth

Super compressible PrimaLoft® Gold Active insulation packs a ton of breathable warmth — ideal for high-output movement — in an ultra-packable design

Bungee toggles

Bungee toggles allow the hemline to be cinched down in extra cold or windy conditions

Ergonomic sleeves

Streamlined sleeves with semi-elastic cuffs stay in place in motion

Highlights

features

Weightless feel
Ultra-light ripstop shell sheds light rain and snow with a PFC-free DWR finish for more eco-friendly weather protection

Targeted insulation
The Thermal Zephyr uses the lightest active insulation that exists to cover the areas where you need the most warmth while allowing for greater breathability + heat release where you don’t

Hold it down
Chest snap under zipper allows for adaptable venting

Better warmth
PrimaLoft® Gold Active Insulation with 45% recycled content provides more sustainable warmth on colder days

Lock it down
Minimal semi-elastic cuffs protect against the weather while allowing room for gloves or mittens

Designed for the trail
Dropped back hemline acts as a splatter guard to keep you warm and dry on messy trail adventures and bungee toggles at the hem cinch the jacket down for extra wind protection

Stay seen
Signature reflective logo on front and “watermark” reflectivity on back increases visibility in low light

materials + specs

Zephyr Runner
100% nylon ripstop (38gsm) w/ PFC-free DWR

Targeted insulation
PrimaLoft® Gold Active Insulation — 45% PCR (post consumer recycled) content, 55% polyester fill

Weight
169g / 5.9oz (M’s Medium)

Garment made in Vietnam

sustainability

The Thermal Zephyr Runner uses PrimaLoft® Gold Active Insulation with 45% recycled content for more sustainable warmth on colder days. The shell features PFC-free DWR finish for more eco-friendly weather protection.

Our Zephyr Runner fabric is also bluesign® certified meaning it is free from harmful chemicals and is fabricated in a way that meets a high environmental standard.

Learn more about our sustainable initiatives here.

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Customer Reviews

Based on 13 reviews
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A
Ashley
Wear it for: Running
Product Fit: Spot-on
Height: 5'1" to 5'3"
Usual Size: XS
Size Purchased: XS
Obsessed in Arizona!

I bought this jacket after loving the original Zephyr Runner jacket for rainy days. I wasn’t sure if I’d get a ton of use out of it as I run in the Sonoran desert of Arizona, but I’ve worn it so much this winter on chilly morning runs when the temps are upper 30s to low 50s. Most days I can wear it with just a sports bra underneath and it keeps me plenty warm, but I can throw on a long sleeve base if needed. It’s great at shielding me from the wind and I love how packable it is, plus the cardinal color is gorgeous. Only wish it came in more colors!

J
Jess
Wear it for: Running
Product Fit: Spot-on
Height: 5'4" to 5'6"
Usual Size: M
Size Purchased: M
The best running jacket

I live in the Midwest, so running throughout the year can require a few different layers. When I first bought this jacket, I was a little skeptical since it was so light and thin, but it really solves every problem I've had with running in the winter. Paired with a thermal shirt underneath, I can wear it in sub-zero temps without getting too cold. It's also not too warm on a 30 or 40 degree day. It does a great job keeping the wind off my chest when its zipped all the way up.

C
Cat
Wear it for: Running
Product Fit: Spot-on
Height: 5'4" to 5'6"
Usual Size: L
Size Purchased: L
The only winter running coat you'll need

So I have tried a BUNCH of different running coats and I can easily say that the Janji one is the best and this is after trying coats from Brooks, ON, New Balance and Craft. The Zephyr is super light and can break down into a very small square which makes it easy to have with me everywhere. Its great at temp regulation with the snap and the ability to tighten the bottom (I've worn it in 20-40 weather with only a long sleeve and have been TOASTY). Plus, the cardinal red is super visible for night runs!

B
Becca P.
Wear it for: Running, Hiking
Product Fit: Spot-on
Height: 5'7" to 5'9"
Usual Size: M
Size Purchased: M

W's Thermal Zephyr Runner Jacket

M
Mary P.L.
Wear it for: Running
Product Fit: Spot-on
Height: 5'1" to 5'3"
Usual Size: S
Size Purchased: S
Perfect 40 degrees jacket

The Zephyr runner jacket is the perfect 40 degree jacket. The ability to open and snap when running intervals is really helpful. Washed well and matched perfectly with Janji running tights.

J
Jill
Wear it for: Running
Product Fit: Spot-on
Height: 5'4" to 5'6"
Usual Size: S
Size Purchased: S
Thermal Zephyr

Great winter running jacket! It is incredibly lightweight and very warm. I've run outside with temps in the upper teens and it kept me very warm. Only issue is that it doesn't breathe that well, so sweat does build up a bit inside. The cardinal color is great and it fits very well. I've gotten many compliments on it from my running friends:)

E
Emma G.
Wear it for: Running, Hiking, Camping
Product Fit: Spot-on
Height: 5'1" to 5'3"
Usual Size: S
Size Purchased: S
Warm, lightweight layer for winter runs!

Super lightweight layer that keeps me warm on winter runs. Well fitting yet plenty of space to move comfortably. Also a good layer for travel, as it packs super small!

E
Eglantine M.
Wear it for: Running
Product Fit: Spot-on
Height: 5'4" to 5'6"
Usual Size: S
Size Purchased: S

W's Thermal Zephyr Runner Jacket

J
Jess C.
Wear it for: Running, Hiking
Product Fit: Spot-on
Height: 5'4" to 5'6"
Usual Size: XS
Size Purchased: XS
The do-it-all jacket!

This jacket is PERFECTION. I've worn it running in 20-35℉ with a thin tank and long-sleeve base layer underneath, and the front insulation keeps me warm while the breathable panels on the back and underside of the sleeves prevent me from overheating. The jacket makes a great layering piece as well. It's so light and thin I can add it over my usual snowboarding base layers on extra-cold days - down to 10℉ just yesterday with just a shell jacket on top!

My measurements: height 5'4; 33-25-35.5, 28" around the shoulders, 21" torso

FIT: the XS fits with room to comfortably raise my arms out in front of me. The bottom hem is about 18.5" across and hits at the widest part of my hips. The drop hem in the back hangs over just the top part of my bum.

Hope this helps in your purchase decision!

C
C.M.
Wear it for: Running
Product Fit: Spot-on
Height: 5'7" to 5'9"
Usual Size: M
Size Purchased: M
Favorite running jacket!

This jacket is extremely lightweight, so I can’t believe how warm it is. It’s exactly as advertised! Perfect for winter running, and I was also warm enough biking in it at 35 degrees with only a base layer under it. I frequently have issues with sleeves being too short, but this jacket fits perfectly. Highly recommend!