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Mercury Track Pant

Mercury Track Pant

M's Mercury Track Pant

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run everywhere guarantee
free shipping over $50
free 60 day exchanges
William wears size M and is 6'1" Slim tapered fit, Size Chart

Exceptionally soft, the coziness of these track pants is rivaled only by their performance. Made of our Mercury Knit fabric, these 4-way stretch joggers combine lightly peached warmth, moisture-wicking management and dependable protection with secure, roomy pocketing for cold weather running pursuits. Read more

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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 has an exceptionally soft hand feel while providing cozy warmth + thermoregulation without added weight

Snug comfy fit
Minimal, flat elastic waistband with an internal drawcord for a completely smooth, secure fit

Freedom of movement
4-way stretch fabric combined with an inner gusset panel + ergonomic seaming on the outer thigh allow for unrestricted range of motion

Hand warmer pockets
Two zip side pockets can stash gloves, wallet, or nutrition while a bungee loop is integrated into the right side pocket to secure keys

Roomy back zip pocket
A secure back pocket with nylon zipper pull can easily secure most phones sizes (with case) while minimizing bounce in stride

Flat hems
Minimal elastic hem bands allow for easy on/off + keep the pant in place when in motion

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

materials + specs

Mercury Knit
78% nylon, 22% spandex

282g / 9.9oz (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.



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 38 reviews
Chris Moyer
Wear it for: Running, Hiking
Product Fit: Spot-on
Height: 5'7" to 5'9"
Usual Size: M
Size Purchased: M
Fall/Winter Running Staple

Love these pants for when the temps drop below 45-50°! Super soft fabric, zipper hand pockets, and large zipper pocket in the back. Bought all 3 colors and a few presents for friends for the holidays! Don’t 2nd guess this purchase…get ‘em while you can!!!

Janet J.
Wear it for: Running
Product Fit: Spot-on
Height: 5'4" to 5'6"
Usual Size: M
Size Purchased: L
Great Pants! Select Size Based on Fit Preference

First of all, I bought the men's version because I wanted the longer inseam. I own 2 pairs. The 1st pair I bought was a size medium and the 2nd pair a size large. I have a 32" waist. The medium felt more like a semi-fit almost like a loose tight than pants feel. Running in them is good because they do have a good stretch and move with you. The size large has more room and definitely feels like pants and running in them feels good too. Overall, I would recommend look at the size chart and select your usual size if you want the semi-fit (which is what they advertise) or select one size up if you want a looser fit. I personally prefer a looser fit for running pants. Other than that I love the pockets and the lightweight material.

Abraham Salas
Wear it for: Running
Product Fit: Spot-on
Height: 5'7" to 5'9"
Usual Size: M
Size Purchased: M

M's Mercury Track Pant

Would buy again

I really like how these joggers feel and fit. They are great for pre/post runs in the Summer heat, as well as warm for those cooler up North days and nights by the water or campfire.

Bryan Jaffe
My favorite joggers

Long short, these are my favorite joggers. They fit and feel great, and are functional. I would wear them all day everyday if possible.

My only gripe is we need them in more colors!

Cara Provenzano
Smooth like butter!!

My husband is so obsessed with these running pants, he now owns them in every color.
The fabric is amazing and the only issue I have is that he wears them everywhere and refuses to TAKE THEM OFF!

Gaston Benitez
I loved this pants

This pants are extremely comfy, the only thing I would change is make them a bit longer. They are still so nice to wear, so I still give them 5/5.

Ben Lum
Quality Product

Love its color, material quality, and the thoughts that went into its design. Fabric is incredibly soft, stretchy but also has great form retention. The waist and ankle bands hug the body without compressing against it. I would rank Jangi’s overall product quality to be on par with Rhone and one step above Lululemon. The pants, being designed for runners, does run one size smaller than aforementioned brands. I typically wear S but had to exchange this one for a M.

Chris Levesque
My favorite running pants

These have been amazing, fit great for my wide legs, perfect length for me, plenty warm and very comfortable

Cole C.
Good Enough for 197 miles across NJ.

I wore these awesome joggers for my run across the state of New Jersey. When I made the switch to wear them around half-way (90+ miles in), that was the change I needed. Soft like velvet and an excellent freedom of movement, and warm and insulating in the heart of winter, these pants really impressed me. I never once worried about chaffing. I never once worried about anything with my pants rather. That is how running should be.

Thank you Janji!