You will find that Gildan makes a great base for layering under flannels or jackets.
Men’s 100% Cotton Tank Top A-Shirt Wife Beater Ribbed Undershirts Size: S-4XL
I like that the round neck is neither too high nor too low on the chest.
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.
6-12 Pack Men’s Tank Top 100% Cotton A-Shirt Wife Beater Undershirts Size S-4XL
You will appreciate the solid color for its versatility and timeless appeal.