This black shirt works just as well under a blazer as it does alone.
Comfort Colors 1717 Unisex 100% Soft Cotton Garment-Dyed Heavyweight T Shirt
A nice touch for the 2XL is the tagless label, so no scratching.
Comfort Colors 1717 Unisex 100% Soft Cotton Garment-Dyed Heavyweight T-Shirt
You will find the crew neck sits flat against the collar bone without gaping.