Under Armour uses a stretchy knit for better mobility.
Under Armour UA Tech 2.0 SS Tee Red Large Loose Fit Short Sleeve Men’s T-Shirt
A nice touch: the solid shade here is saturated without being overwhelming.
NWT Under Armour UA Tech 2.0 Men’s Red Short Sleeve Shirt (0927)
The fabric on this Under Armour tee breathes really well.
NWT UNDER ARMOUR Men’s UA Tech 2.0 Short Sleeve T-shirt 1326413 | Size L (Large)
The clean solid color makes this tee a smart pick for minimalists.
Under Armour 1377843 Men’s Large Tiger Tech 2.0 T-Shirt, Red Solstice/Black
A nice touch is the stripe fading at the edges for a worn-in feel.