What I notice about the crew neck is its even stitching and smooth finish.
Pontiac Division Vintage Car Licensed Adult T-Shirt
The crew neck on this is soft and relaxed, making it easy to wear casually.
Gilligan’s Island Gilligans Head Licensed Adult T-Shirt
This crew neckline is a nice touch because it doesn’t show your undershirt.
2-4 Packs Men’s G-unit Style Cotton Tank Tops Square Cut Muscle Rib A-Shirts
A nice feature is the slightly looser fit through the body for men.
Calvin Klein Cotton RIB (MED) NB4036-313 MULTI COLOR TANK TOPS 3 PACK
This cotton shirt works perfectly under a blazer or alone.