A nice touch is the heavier cotton, which men often prefer for a solid feel.
5 Pack Of Hanes 518T Mens USA Grown Cotton/Poly Tee Tall Stylish Beefy-T Shirt
Hanes has a reputation for making basic tees that just do the job right.
Hanes 518T Mens Cotton Short Sleeve T Shirt Crew Neck Beefy-T Tall T-Shirt
A crew neck design like this one works great for layering under jackets or hoodies.