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M's Zephyrunner Wind Shell

hyperlight, ultra packable, exceptionally versatile

29 reviews
$128
Color: Midnight
Size
Slim fit

Temperature balance built for the trails - the Zephyrunner Wind Shell is an ultralight, packable essential that helps you effortlessly navigate changing conditions by balancing durability, breathability, and coverage for year-round adventures.

Features

Strategic breathability
Back panel venting keeps you comfortable while maintaining wind protection

Better than zero
The Zephyrunner strikes a perfect balance of wind-breaking breathability with a CFM rating of 16 engineered specifically for running + high-activity output activity

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 and hood toggle allow 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

Visibility
Signature reflective logos for improved visibility in low light
Materials + Specs

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

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, the Zephyrunner cuts most wind while staying highly breathable - ideal for running performance.

2% for clean water

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

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 about our guarantee.

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Customer Reviews

Based on 29 reviews
86%
(25)
7%
(2)
3%
(1)
3%
(1)
0%
(0)
S
Steve
Wear it for: Running, Hiking, Camping, Climbing, Cycling, Mountain Biking, Everyday wear
Product Fit: Spot-on
Height: 5'10" to 6'0"
Usual Size: L
Size Purchased: L
Perfect ultralight, breathable jacket

This jacket is perfect for cutting the chill on windy or drizzly days. Its ultralight design makes it incredibly convenient—you can easily take it off once warmed up, ball it up in your hand, or stash it super compact in the zippered chest pocket. It feels even lighter than the Patagonia Houdini, but it’s not sheer and still provides substantial wind blocking and warmth. It’s also a great jacket to wear casually. I keep one in my truck just in case I need an extra layer when daylight turns to dusk. I love it so much that I’ve bought it in four different colors!

L
Lori C.
Wear it for: Running, Hiking, Camping, Climbing, Mountain Biking
Product Fit: Spot-on
Height: 6'0" to 6'2"
Usual Size: M
Size Purchased: M
Perfect

Purchased this for my son for Christmas. He absolutely loved it and will be wearing it as a mid layer.

A
Alex S.
Wear it for: Running, Cycling, Everyday wear
Product Fit: Spot-on
Height: 5'10" to 6'0"
Usual Size: L
Size Purchased: L
Zephyrunner Wind Shell.

Great shell! I use it on an 8 mile (bike) commute with temps around 46 degrees in the morning and on runs. Layered up. Lightweight. I like how they designed the hood strap/cinch from the back. Highly recommend. Looks good wearing it casually as well.

C
Colin T.H.
Wear it for: Running, Hiking, Camping, Cycling, Mountain Biking, Everyday wear
Product Fit: Spot-on
Height: 6'3" or taller
Usual Size: XXL
Size Purchased: XXL

M's Zephyrunner Wind Shell

D
Danny L.
Wear it for: Running
Product Fit: Spot-on
Height: 5'4" to 5'6"
Usual Size: M
Size Purchased: M
Love this windshell

Best running windshell made...light ,packable,and super breathable...blocks wind well for running ...I use my BD distance windshell in the mountains when I need more wind protection.

D
DFank
Wear it for: Running, Hiking, Camping
Product Fit: Spot-on
Height: 6'3" or taller
Usual Size: XL
Size Purchased: XL
Perfect - even better than my Houdini jacket

Everything it was advertised to be. I use this in fall as a wind breaker when running and one of a few layers in winter running. It’s very comparable to the Patagonia Houdini jacket except it’s got a few more really useful pockets. It is also stylish as heck.

J
Joseph M.

M's Zephyrunner Wind Shell

M
Matthew M.
Wear it for: Running, Everyday wear
Product Fit: Spot-on
Height: 6'0" to 6'2"
Usual Size: M
Size Purchased: M
Versatile jacket

I’m grateful for this jacket as it works on so many levels. I use it for running, early morning walks, and errands. I might grab a backup.

W
William B.
Wear it for: Running
Product Fit: Spot-on
Height: 5'7" to 5'9"
Usual Size: M
Size Purchased: M
Great wind/water shell

My son loves it. Great for spring track.

J
Jonathan B.
Wear it for: Running
Product Fit: Spot-on
Height: 6'0" to 6'2"
Usual Size: L
Size Purchased: L
Awesome windbreaker

Perfect fit for running. Trim but not tight. Disappears when not needed. Super soft next to the skin. Love the back vents.

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