You will find that a solid T-shirt like this one is a wardrobe workhorse.
Boss By Hugo Boss Men Black Tee Shirt Front Pocket Logo Ribbed Cuff & Collar XL
A nice touch is the black contrast stitching on the sleeves.
Vintage Y2K Quiksilver Polo Shirt Men Medium Beige Striped Ribbed Edition Surf
The collared neckline adds a dash of retro style to this modern cut.
H&M Regular Fit Ribbed Ivory Polo Shirt Size Large
This solid T-shirt works as a solo piece or under a button-down shirt.
Mens Carbon Shirt/Sweater Size XL Grey 8″ zip Long Sleeves Collar 100% Cotton
A nice touch is the solid colorway, letting the soft fabric take center stage.