Here are the specs for the Bella Canvas Tee:
This shirt is "Heather Black"
4.2 oz./yd², 52/48 Airlume combed and ring-spun cotton/polyester fleece, 32 singles
Athletic & Black Heather are 90/10 Airlume combed and ring-spun cotton/polyester
Pre-shrunk
Relaxed fit
Side seams
Tear-away label