Men's UA MK-1 Short Sleeve

Style # 1323415
Height: Size: Fit: Fitted
Size and Fit Guide
Due to limited quantities, only 1,000 allowed per customer.
The product can't be added to the bag
Height: Size: Fit: Fitted
Men's UA MK-1 Short Sleeve

Alternate Views

Product DNA

These are the go-to gym shirts for nearly every guy. The fabric dries fast to keep you cool and the streamlined fit cuts out any bulk or unnecessary material.

It's also part of the UA MK-1 system—gear that all works together to give you what you need in any training situation.
  • Fitted: Next-to-skin without the squeeze
  • HeatGear® fabric is incredibly 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
  • Imported

Review Summary

36 Reviews
72% of reviewers recommend


Runs small Runs large


Min. Max.


Min. Max.

Amazing shirt!

This Shirt was amazing. I feel like an athletic rockstar when wearing this shirt.

Valoración de camiseta corta

Buen tacto, flexible, cómoda, el sudor se seca rápido.

Great t shirt

Great fitting shirt. Very light and breathable and perfect for training in.

Great Lightweight Activewear

Fits very nicely, comfortable and flattering. Lightweight, great to keep cool during a good workout

Top Ware.

Sehr gute Qualität, trägt sich angenehm auf der Haut. Ist jeden Cent wert !!!

Top product.

Great shirt. Light, comfortable and of great quality.

Great t-shirt

It was a gift for my husband. I bought it in Blue. The color is more beautiful than the photo so I was very happy. It fits well, the texture is very soft.

Migliore t-shirt in poliestere in giro!

Elastica, fresca, confortevole, facile da lavare e...veloce ad asciugare. Perfetta per le mie esigenze di ciclista urbano. E non solo. Grazie, Under Armour! ^_^

Davvero ottima maglietta

Acquistata maglietta per allenamenti molto intensi in cui si suda davvero tanto (Crossfit, funzionale, sessioni di cardio). La maglia è molto confortevole e ha un ottima traspirazione. Perfetta anche quando si lava perchè si asciuga davvero in un batter d'occhio.

Perfect Performance Tee

I love this tee! The cut is excellent - breathable, yet fitted. It's so great for beach weather where I live. The material lets you breathe and feel dry without the hot, heavy, weighty feel of typical cotton. My work allows black tees and this one is perfect for moving around in. Thanks Under Armour!