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M's Runterra SS Tee in Cove

Regular price $48
Unit price  per 

Sustainable materials, responsibly made.

  • Cove Topo

  • Sage H2O

  • Color Cove

    Color Cove

    Color Cove

    Color Cove

  • Plateau

  • Sage

M's Runterra SS Tee in Cove

Only 1 left in stock!

Aron wears size M and is 5'11" Athletic fit, Size Chart
Complete the look with the M's 5" AFO Middle Short

Embedded with volcanic ash for active odor-control and thermoregulation, this lightweight short sleeve has the look and feel of cotton with added performance benefits. Read more

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Kit Out

Kit Out

Complete the look

behind the design

behind the design



Poly with volcanic ash

Supima cotton


This is not your typical shirt. Runterra is a blend of US-grown, long-staple Supima® cotton — which is stronger and softer than typical cotton — with a special polyester that has been blasted with volcanic particles to enhance odor-resistance, speed up dry time and provide greater thermoregulation. Yes, it has volcanic particles in it and no, you will not feel them. The fabric is incredibly soft, comfortable and durable yet lightweight, and is intended to be worn repeatedly between washes to reduce water use.



Premium cotton
Made from US-grown, Supima® cotton for superior softness, strength + durability

Active comfort
37.5® polyester with embedded volcanic ash provides enhanced heat + moisture regulation as well as odor-resistance

New sport raglan
Signature raglan sleeve design keeps seams off the top of the shoulders for comfort

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

materials + specs

materials + specs

75% Supima® cotton, 25% 37.5® tech polyester

117g / 4.1oz (M's Medium)

Garment made in Vietnam

care instructions

care instructions

Wash cold with like colors

Machine dry low or hang dry for best results and lifespan of the garment

Heads up — Circuit Knit is not pre-shrunk

Some shrinkage may occur in the wash as Circuit Knit fabric is made of more than half natural fibers.

Fabric Callout

Fabric Callout


A lightweight yet resilient fabric that wears like soft cotton with the added performance of active odor-resistance and thermoregulation — thanks to embedded microscopic volcanic particles.

Shop All runterra



Runterra is made from premium, long-staple Supima® cotton which is 50% longer and up to 45% stronger than other cottons (and softer too). The stronger the fiber, the more durable the garment, and therefore the more it can be worn. Supima® cotton is grown by a select few family farms that utilize advanced water and soil management techniques to reduce consumption and ensure the health of the land.

Runterra fabric is also OEKO-TEX® 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.

Customer Reviews

Based on 4 reviews
Finally, something for short men!

Please, please, please never change your men's shirt sizing! My boyfriend is 5'4", which it's difficult finding him every day clothes but even more difficult to find him athletic wear. Size small fits him perfectly! The shirts are not super long or billowy as many standard US men's smalls are (based on 5'7" btw). Since the first shirt fit so well, he got a second and the long sleeve.

Bonus points, these shirts are super soft and comfortable.

Great every day (and running) shirt

Huge fan of this shirt and own it in two colors. Great for running every day and just hanging around.


M's Runterra SS Tee in Cove

Disappointed: not for tall people

The good: color and design. The quality of the product and craftsmanship is also very good.

The bad: size and fit. It's been a long time since I've struggled with a brand and sizing like I have with Janji. For your reference, I'm 6'2" and 160lbs. Mediums in almost every other brand fit me great. Supposedly this shirt should be 27" long (which, if it stayed true, would be fine), but after a washing - and, yes, according to the label - it shrunk to under 25". Now it sits at that awkward length where it's just short enough to not look very good. It's definitely a bummer since instead of being a first choice out of my drawer, it's now regulated to being the "everything else is dirty" shirt.

Suggestions: They call this shirt athletic fit, but it's still pretty boxy compared to athletic fit clothing from other brands. It can be more trim. Additionally, all of their tops (including outerwear) need an extra inch in length, at the very least. After buying three different tops now, I've come to the conclusion that I just have to wait until they rethink their sizing and fit.