Catalyst 2.0

General Information: - Proprietary Terran fabric is soft, stretchy, and durable - Antimicrobial so you wont stink - Partially recycled product - Raglan shoulders and flatlock seams for a guaranteed no chafe - Additional "tail" in the rear to stay tucked - Not for use as pants  Explanation The Catalyst Tee is Terra Arma's purpose. We set out with the goal of creating the most comfortable, durable, and functional shirt for military, public servants, and other first responders ever.  While it may look simple, the Catalyst has functional details hidden in it.  The raglan cut shoulders paired with flatlock seams increase strength and relieve chafing while wearing kevlar or a plate carrier.  The neck is dual ribbed Terran which will prevent stretching and the dreaded "bacon neck" you find in other shirts. Finally, the slight tail in the rear will keep your shirt tucked while bending or crouching. You will look forward to wearing your uniform with the Catalyst underneath. This product is an athletic cut with a tighter fit. If you prefer a looser fit, order a size up.


A portion of proceeds from your purchase will help Veterans and First Responders through our Ascend Together Initiative Learn More

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Catalyst 2.0 $45.00


Customer Reviews

Based on 5 reviews
David Weinberg
Awesome shirt!!!

Superior quality shirt. Feels and looks great! Great work Terra Arma!!

They work as well in the office as they do in the back country

I learned of Terra Arma a few years ago. I got the catalyst tee to wear as an undershirt day to day. The fabric used in these shirts is the most versatile fabric I have ever seen. The shirt will not hold a smell which is great, because I love to hit the river, but not smell like the river afterward. They dry super fast. I will often take them out on a paddle board trip, swim around while I am out, and before I can deflate the board and pack them away the shirt is dry which is fantastic for the drive home. The placement of the seams is fantastic when you throw on the old pack or take the plate carrier out for a run. They work as well in the office as they do in the back country. This is the gold standard for clothing and nobody should be without at least one.


Good quality, packed well.

Bruce Leader
I can' imagine life without these T-Shirts!

It's been a little over 2 months since I purchased my first Terra Arma product. I first heard of the brand from the Medevac Podcast and decided to give it a try. What amazing products! I now own a bunch of these (including the Medevac Podcast Catalyst and the Logo Catalyst) as well as the Catalyst Luxes, a long sleeve Catalyst Luxe and a zip hoodie! Everything made by Terra Arma is amazing! Here in New England, we have had a scorching summer! The ONLY shirts that make it bearable are my Terra Arma shirts! They keep me cool and comfortable and move with me! I've used them for everything from exercise to hiking to walking my puppy. My only request would be to make some polo shirts in the same material!! Thanks so much for such great products!

Brandon West
Amazing Fit and Comfort

Probably the most comfortable t-shirt I have worn. Very durable so far and the fit is exactly what I wanted. Will be buying more!