Skip to product information
1 of 4

Men's Runterra Bio Tee Short Sleeve Shirt

Sea | MT06A-S22-SEA
Regular price $24.00
Sale price $24.00 Regular price $48.00
Mens casual dress
Free Returns and Exchanges for 30 Days!
This item ships free!

Check In-store Availability


Run in it, sweat in it, live in it — then biodegrade it!

Runterra - Lightweight, resilient, and versatile, Runterra wears like your softest cotton tee with the added benefits of active odor-resistance and thermoregulation — thanks to volcanic particles embedded within the fabric.

Revised design - by removing the neck tape and swapping the size label/logo or screen prints make the Runterra Bio Tees a tough lighter and even more fully biodegradable this season.

In addition, Janji 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.

The first synthetic-blend running shirt that biodegrades like a 100% cotton tee, the Runterra Bio offers the enhanced moisture and odor control of specially-formulated 37.5® polyester with the comfort and versatility of cotton. This new, innovative fabric breaks down into organic compounds in under four years. Conventional polyester takes four hundred.

Don’t sweat it - this tee will only start to biodegrade in anaerobic (oxygen-poor) environments. It breaks down in the landfill, not in your closet.

Biodegradable - Runterra Bio is powered by a specially formulated 37.5® polyester with enhanced biodegradation to break down into bio-based compounds in under 4 years in an oxygen-poor environment like a landfill

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

Everyday looks - Easy to wear, casual cut with a straight hemline Active comfort
Blended with 37.5® polyester, a special technology utilizing the natural benefits of microscopic volcanic ash to provide enhanced thermal, vapor + odor regulation to maintain body comfort during activity

Wear more, wash less - The natural odor resistance of cotton is boosted by the volcanic particles which "trap" odors so you can put this top through repeated wear Modified raglan design - Shoulder seams are rolled back off the top of the shoulders for ergonomic comfort

Shrinkage is natural - This top is made from 70% natural fibers and is not pre-shrunk so some shrinkage may occur, up to half a size

Sustainability - 2% from this purchase will be donated to support clean water projects in Jakarta, Indonesia as part of Janji's Java Collection.

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.

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
Avoid washing and drying with high heat.
  • Runterra: 70% Supima® cotton, 30% 37.5® tech polyester
  • Garment made in Vietnam
  • Weight: 103g / 3.6oz (M’s Medium)
  • Color: Sea