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M's Mercury Qtr-Zip

Regular price $94
Unit price  per 

Sustainable materials, responsibly made.

This new fabric is pretty life changing
I have a few long sleeves from Janji, and this is by far the most comfortable fabric. It’s soft yet breathable. 

— Seth, Janji Wear Tester
  • Plateau

  • Color Nightshadow

    Color Nightshadow

    Color Nightshadow

    Color Nightshadow

M's Mercury Qtr-Zip in Nightshadow

Only a few left in stock!

THIS PRODUCT IS CURRENTLY AVAILABLE ONLY TO JANJI COLLECTIVE MEMBERS

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Aron wears size M and is 5'11" Slim fit, Size Chart

Don’t let the coziness of this quarter-zip fool you. Made of our 4-way stretch Mercury Knit fabric, this streamlined mid-layer offers lightly peached warmth, moisture-wicking management and dependable protection for cold weather running comfort. Read more

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behind the design

Breathable

Cozy warmth

Moisture-wicking

Peached softness

Stretch

Cold weather running comfort. The design of our streamlined Mercury Qtr-Zip is based on those four words. A refined raglan sleeve allows for total freedom of movement while integrated thumb slits and a cadet collar add extra protection. A single zip chest pocket keeps storage simple. The true stand-out feature of this modern update on the classic mid-layer is the fabric, which is both high-performing and exceptionally soft and cozy — thanks to light peaching on both sides that provides warmth without added weight. This is the new go-to when the mercury drops.

features

Cold weather running comfort
Breathable, moisture-wicking Mercury Knit excels at transferring sweat + heat away from the body for comfort during prolonged efforts

For when the mercury drops
Lightly peached on both sides, Mercury Knit provides cozy warmth + thermoregulation without added weight

Freedom of movement
A refined raglan sleeve design, underarm gusset + 4 way-stretch fabric ensure a streamlined fit with full range of motion

Secure chest pocket
A single chest zip pocket can secure a phone

Better thumb slits
Integrated thumb slits built into the cuffs essentially disappear when not in use

Hang it up
An elastic locker loop is integrated into the back collar

Visibility
Janji signature blue reflective logo on front + “watermark” on back ankle increases visibility in low light

materials + specs

Mercury Knit
78% nylon, 22% spandex

Weight
273g / 9.6oz (M's Medium)

Garment made in Vietnam

Fabric Callout

Mercury Knit

A 4-way stretch fabric with light peaching on both sides for breathable warmth without added weight, Mercury Knit reinvents how cold weather performance gear should feel — it’s a new level of winter running comfort.

SHOP ALL MERCURY KNIT

sustainability

Mercury Knit is made of premium, durable nylon and is 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 12 reviews
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M
M.
Really Great Shirt

Received this shirt yesterday, and ran in it this morning. Very comfortable. It kept me warm, yet it is lightweight. I loved it so much I ordered another one.

S
S.
Great extra layer for cold weather

The fit is great, Mercury material is very comfortable. Keeps me warm during cold weather runs/ workouts and breathes so well that is stays on.

C
C.
Great running layer

Excellent running layer. Warm but lightweight. I wear a t-shirt underneath. On colder days (below 30 F), I'll wear a long sleeve t-shirt.

G
G.T.
Fantastic addition to winter wardrobe

Super comfortable, fits perfect. I'm 5'11 and 170lb and the medium is a perfect fit. I wear a tshirt under and it keeps me warm. Super happy

R
R.M.
Ideal!

Received the Mercury Quarter Zip and right out of the package the material(s) was soft on the inside and substantial on the outside, that I could not wait to try out on a run. However, proof was going to be on an actual run. I’ve taken this mid-layer top on two runs and I’m thinking this is one my favorites. It’s very comfortable, breathable, and insulating due to the make-up. Midwest winters are always fluctuating here and this piece is great for very low 30’s about 45 degrees depending on your layering.