Most men's crewneck shirts come in short‑sleeve, long‑sleeve, and sleeveless options. Styles are generally basic and straightforward, focusing on standard sleeve cuts rather than decorative sleeve details.
Cotton is the most common material, often listed as 100% cotton. Some crewnecks include small amounts of stretch (commonly around 5% spandex) or use polyester blends.
Some crewneck undershirts list moisture‑wicking technologies (for example 'Cool Comfort') and built‑in odor control or odor‑fighting treatments to help manage sweat and scent.
Construction features that help maintain shape include double‑needle bottom hems, coverseamed cuffs and necks, shoulder‑to‑shoulder tape, and ribbed collars reinforced with Lycra to resist stretching and sagging.
