Under Armour Seamless Stride ¼ Zip

Using levels of mesh mapped to your body, you get ventilation where you need it, plus the comfort of fewer seams. It's pretty much the most comfortable thing you'll ever train in.
Soft knit fabric with engineered mesh ventilation, mapped to the places you need it most
Nearly sew-free construction to eliminate chafing
4-way stretch material moves better in every direction
Material wicks sweat & dries really fast
Generous ½ zip front makes for easy layering
Reflective details for greater visibility on low-light runs