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Thermal Zephyr Runner Jacket

Thermal Zephyr Runner Jacket

Lightweight insulated warmth + weather protection in an ultra-packable jacket

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W's Thermal Zephyr Runner Jacket

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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 $55
free 60 day exchanges
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

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 16 reviews
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(15)
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M
Mindy S.
Wear it for: Running
Product Fit: Spot-on
Height: 5'0" or shorter
Usual Size: XS
Size Purchased: XS

Would like an outside pocket (s)

k
kristi c.
Wear it for: Running
Product Fit: Spot-on
Height: 5'4" to 5'6"
Usual Size: XS
Size Purchased: XS
Perfection

The best lightweight, warmth outer layer. Fit is great (xs 5' 4", 110lbs) cardinal color is eye-catching but no obnoxious. Zips easy and is comfortable.

A
Amy W.
Wear it for: Running
Product Fit: Spot-on
Height: 5'1" to 5'3"
Usual Size: S
Size Purchased: S
Great lightweight winter outer layer

Snagged the obsidian on sale and had to come back for this gorgeous color. It's very lightweight and has an inner zip pocket perfect to store your keys and a mask - just wish it had outer zip pockets as well. It's extremely warm for how lightweight it is and has held up really well except for sub zero real-feel temps in Boston. Definitely not cheap, but I'm glad I saved up for these and don't regret getting a second color. Expecting these to hold up very well for years to come.

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!