You will find this camouflage works great for layering under a open flannel.
Camouflage Camo Army Military T-Shirts Tees Tee Shirts
A nice touch is the small camouflage tag on the hem.
Vintage Tee Swing Camouflage Shirt Mens 2xl Desert Vector Tri Color 80s 90s Army
The camouflage here is printed on a soft cotton that breathes well.
Rothco Camo T-Shirt Military Short Sleeve Tee Army Camouflage Tactical Shirt
What stands out about this shirt is how the camouflage doesn’t look cheap.
Rothco Men’s Camo T-Shirt – Tri-Color Desert
You will find the crew neck is just loose enough to let air circulate well.