You will find that the fit is true for men who are between sizes.
New 3-12 Pack Men’s 100% Cotton Tagless T-Shirt Undershirt Tee Plain White S-XL
You will notice the solid pattern helps the shirt drape nicely on the body.
Hanes Men’s White Crewneck T-Shirt 6-Pack Undershirt Tee TAGLESS FreshIQ Comfort
A nice touch is how Hanes pre-shrinks the fabric so your size stays the same.