They use a crew (round) neckline, short sleeves with a basic sleeve cut, and pullover construction.
Many listings note the shirts are pre-shrunk and describe the fabric as midweight.
Each listing specifies a package quantity of one shirt.
Many listings list a 60% cotton / 40% polyester blend; descriptions also mention ring‑spun cotton, soft or lightweight cotton–poly blends, pre‑shrunk/poly‑cotton blends, and midweight fabric.