This great athletic tee from Champion Performance lines features vented mesh sides, short sleeves, red 100% polyester fabric with white stripes, and a v-neck collar.
Machine washable.

Brand new with tags. I did see a tiny smudge on the back right sleeve, looks like something that should come right off when washed. No foul, pet or smoke odors.

Listed as a Men's size Large.
All Measurements are approximate and taken while laying flat:
Width (Armpit to Armpit): 22"
Length (Shoulder Collar Edge to Bottom Hem): 31"
Sleeve Inseam: 5"