What I like is the lack of logos, which men often prefer for a clean look.
HOWITZER Men’s T-Shirt DEFEND FLAG Military Grunt White S M L XL 2XL 3XL 4XL
A nice touch is the soft white color that doesn’t scream for attention but looks elegant.
Armed Infidel Gun T-Shirt Rifle Desert Size All Colors S,M,L,XL.2XL,3XL,4XL,5XL
This one is made for men, so the shoulders and chest have a roomier cut.
Camo Tank Top Sleeveless Muscle Tee Camouflage Tactical Army Military A T-Shirt
The camouflage pattern here is inspired by classic woodland military gear.
Moisture Wicking T-Shirt Solid Tactical Workout Crew Neck Comfy Lightweight Tee
This Rothco T-shirt has a straight hem that looks neat untucked.