





Embedded with volcanic ash for active odor-control and thermoregulation, this lightweight long sleeve has the look and feel of cotton with added performance benefits. Read more
Explore more
↓
Highlights
behind the design
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.

features
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
Runterra |
Garment made in Vietnam |
care instructions
Wash cold with like colors Machine dry low or hang dry for best results and lifespan of the garment |
Heads up — Runterra is not pre-shrunk We have relaxed the body and slightly lengthened the sleeves of this top to accommodate for some shrinkage which may occur in the wash cycle since Runterra is made from a majority natural fiber. Avoid washing and drying with high heat. |
Fabric Callout

Runterra
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 RUNTERRAsustainability
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.

JOIN THE COLLECTIVE
Already a Janji Collective member? Log in to unlock access now.
15% lifetime discount. Priority access to all releases + limited run Janji gear. Exclusive Janji Collective Team Singlet.


Membership +
Exclusive JC Singlet
$50
Key member benefits:
- 15% lifetime discount.
- Priority access to all releases.
- Limited run Janji gear.
- Exclusive Janji Collective Team Singlet.
Membership +
Exclusive JC Singlet
$50
Please select your gender + size Size Chart
The $50 membership fee goes toward supporting clean water initiatives through our clean water partner

JANJI COLLECTIVE MEMBERS GET FIRST DIBS ON ALL NEW RELEASES FOR A LIMITED TIME. BECOME A MEMBER TO UNLOCK ACCESS NOW, OR WAIT UNTIL THE GENERAL RELEASE.
HEADS UP — JANJI GEAR IS LIMITED RUN AND CAN SELL OUT QUICKLY.