Lightweight, loose fit gravity-oriented jersey, made of very breathable venting mesh fabric. The airy yet robust Bike Tee Logo LS in moto-style was just made for fast runs in the park.
I was thinking of a slightly thicker, more durable material because it stretches a little more than I expected. This is mostly annoying to me because although it is good in width, the waist and sleeves are longer, so it feels even more stretchy when I put things in the back pockets. I hope it doesn't stretch in the material either.