Free shipping on all orders $40+

Holiday questions?


W's Runterra LS Tee in Plateau

Regular price $62
Unit price  per 

Sustainable materials, responsibly made.

  • Astral H2O

  • Sage H2O

  • Color Plateau

    Color Plateau

    Color Plateau

    Color Plateau

    Color Plateau

  • Cove

  • Astral

  • Sage

W's Runterra LS Tee in Plateau

Gabby wears size S and is 5'08" Regular fit, Size Chart
Complete the look with the W's 7/8 Groundwork Tight

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

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

Ergonomic seaming
Shoulder seams are rolled back 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

139g / 4.9oz (W’s Small)

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 15 reviews
Win-Win long sleeve running shirt👍

Comfortable & very cool print design & color. I love all Janji & thank my friend & owner Charlotte Walsh-Charles River Running in Norwood MA for introducing me to this top notch running apparel!

Happy Runner indeed!

Another win from Janji! Great top -- easily layered and fantastic on its own!

Comfy, yet technical!

Love this shirt for many reasons. 1. It looks cool and the art is rad. 2. It’s comfy to wear around the house/run errands 3. Technical enough for a run and layering piece. I want all of them!


W's Runterra LS Graphic Tee in Sage H2O


Love running with this shirt in the cool winter of San Francisco... feels light, looks great on- love the color and the design on the back and absorb the sweat but with no smell - plus I love the awesome message on my back as I run the streets of SF to spread such an important message! Thank you !