Men's UA Threadborne Siro Embossed T-Shirt

Style # 1289584
Height: Size: Fit: Loose
Mens UA Threadborne Siro Embossed T-Shirt
  • Availability: 
  • Availability: 
Size and Fit Guide
Due to limited quantities, only 10 allowed per customer.
The product can't be added to the bag
Height: Size: Fit: Loose
Men's UA Threadborne Siro Embossed T-Shirt

Product DNA

Using new manufacturing techniques, Threadborne Siro fabric is built to eliminate distraction. We‘ve engineered it to keep the ideal distance between fabric and athlete, so it won't cling when wet and dries incredibly fast.
  • Loose: Fuller cut for complete comfort
  • Threadborne Siro fabric gives greater stretch & recovery, ultra-soft feel & more breathable performance
  • Material wicks sweat & dries really fast
  • Anti-odor technology prevents the growth of odor-causing microbes
  • 100% Polyester
  • Imported


This is what makes our gear work harder—and smarter—than anything else out there.


The original innovation our founder dreamed up. This super-breathable fabric wicks sweat and regulates body temperature so you feel cooler, drier, and lighter than ever.

Review Summary

10 Reviews

nice shirt

very comfortable but a size small is very big on me even though other ua shirts and other brands fit a little smaller.

use these shirt in lieu of the regular them

I have been using UA shirts as undershirts for quite a while and the originals I was using are no longer available. I picked these as one of the replacements to try. Soft, comfortable, a great replacement for everyday use. We'll see how they hold up over time...

Poor Quality

I am a long time customer of the Men's Charged Cotton t-shirts. I purchase some of the newer Charged Cotton t-shirts and the quality is very poor.. So I purchased some of the Men's Threadborne t-shirts and the quality is very very poor.. Not sure what is happening to Under Armour's quality standards. It would be better to increase your cost than lower your standards.

Okay not great

Really like the colors and all but the shirt rides up on certain exercises like bench press or do hanging leg raises. Really gets annoying. It’s the material I’m guessing but it’s probably great day shirt [This review was collected as part of a promotion.]

Perfect Shirt For the Gym

Love this shirt. I ended up buying a couple in different colors. Extremely comfortable and perfect for the gym/ workouts.

Awesome Shirt

Very comfortable material and it fit perfect. I will buy more in different colors.

Best Under Armour Shirt Available

I have owned about every version of an Under Armour shirt in every different material. This is the best shirt they make. Ultra soft (as close to cotton as I have found), non-cling, dries quickly, washes and dries without becoming a static ball. The only hope is they will continue to carry this iteration of material as my favorite shorts (HIIT woven) were changed/updated and now gone. Get this shirt

Great Shirt

This shirt was super comfortable and also had a great fit. Super soft and perfect to work out in!

Great quality

Beautiful shirt, but is a little shorter than other ones. If you're tall (I'm 6'6) it'll be riding up on you. [This review was collected as part of a promotion.]

Amazing T-Shirt!!!

As advertised!! I wore this shirt while working out and it was amazing! It dries super fast, it's very comfortable and it absolutely doesn't stick or cling to your body when wet or dry. This is another superior product by Under Armour.