Men's UA MK-1 Short Sleeve

Style # 1306428
$50.00 AUD
or 4 interest free payments of $12.50 AUD with learn more
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Height: Size: Fit: Fitted
Size and Fit Guide
Due to limited quantities, only 100 allowed per customer.
The product can't be added to the bag
Height: Size: Fit: Fitted
Men's UA MK-1 Short Sleeve

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Product DNA

These men's training T-shirts are built with fabric that dries fast to keep you cool, and a streamlined fit to cut bulk. They're part of the UA MK-1 system—a collection of gear keeps you ready for any training situation.
  • Fitted: Next-to-skin without the squeeze
  • HeatGear® fabric is ultra-soft & smooth for extreme comfort with very little weight
  • Mesh back & underarm panels deliver strategic ventilation
  • 4-way stretch construction moves better in every direction
  • Material wicks sweat & dries really fast
  • Anti-odor technology prevents the growth of odor-causing microbes
  • Style #: 1306428
  • 90% Polyester/10% Elastane
  • Imported

Review Summary

57 Reviews
40% of reviewers recommend


Runs small Runs large


Min. Max.


Min. Max.

Nice shirt but the collar feels a bit weird

Great fit and comfort, quality seems good so far (after a month). I just have an issue with the collar, not sure if it's just me. When I put the shirt on I always think I have it on backwards as the collar is a little too tight at the front, after where it for a while I forget about this though.

Great quality

Been using as my go to squat shirt and can't be happier!

mk1 short sleeve

Hi, the mk1 short sleeve is ausome but i'd like to see the waist a little snugger [tapered] love the mesh back , one of the best short sleeve shirts . I liked the raid shirts from a couple of years ago also and the cold gear reactor hybrid hoodie with the zip side pockets NOT the one with the snap buttons, that one was cut way too baggy in the waist and the snap buttons was a bad idea.

Great workout and everyday shirt

People keep comparing this to the Raid shirt which I think is appropriate. They have several similar characteristics. Overall, the Raid is my favorite but I only have 2 of them as the color choice went away. Both gray and dark gray I have. I have about 10 of these MK1 shirts and they are fantastic. The vented back is nice plus I like the design over the shoulders and down the sides. I've had several small holes appear on the chest of one of them right after a workout, which I've only had for a couple months. Overall, I love this shirt.

Hey idiots

what is the FIT of this shirt ? Loose or Fitted ? you stupids

Cool and nice fit

Very cool. Great for excercise and also fits nicely. This is the second one I purchased.


good looking shirt but this style of shirt the size apparently runs small

Exactly what I Need

Fits amazing and I work in the Texas heat and these shirts perform phenomenally. I hope UA never discontinues these shirts!


What the heck to you people use as size guidelines. One time a large T-shirt, same fit, etc is so big i could get 20 pounds before it fits. Next a ordering same shirt and you can breath it’s so tight. Get a guide and use it

Under Armour and Jemima from Rebel sports AWESOME

Well my best friend is an avid under armour customer and has always espoused your products shorts tees slip ons. I was shoe shopping at rebel sport at warringah mall got my shoes and on the way out saw a under armour section . Went had a look was greeted by Jemima and thoroughly looked after by her . I hate shopping for clothes and shoes for myself because i am a very large strange shape (always hard to get clothes that fit. But after trial error and much patience from Jemima i bought a pair of shirts and tee shirt. I wear shorts to work every day they are literally the most comfortable shorts i have ever worn and the tee shirt now is super comfy very happy with product and service