A nice touch is the heavier cotton, which men often prefer for a solid feel.
Delta Magnum Weight 100% Cotton Long Sleeve T-Shirt Burnt Orange L Large NEW
This t-shirt is for unisex adults, so it’s easy to order without second-guessing.
3 Pack Of A4 N3142 Mens 100% Polyester Cooling Performance Tee Stylish T-Shirt
A crew neck is a classic choice, and this one does it right with soft stitching.
A4 Men Stain Release Short-Sleeve Cooling Performance Crew,N3142,S-2XL
You will find the crew neck is just loose enough to let air circulate well.
Comfort Colors 1717 Garment Dyed Heavyweight T-Shirt Ringspun Crew Neck S-3XL
A nice touch is the regular cut, which gives you room to move without extra fabric.