This t-shirt is for unisex adults, so it’s easy to order without second-guessing.
Aperture Laboratories T-Shirt – half portal life video games
A nice touch is the unisex adult fit, which gives you plenty of room to move.
Gildan T-Shirt Heavy Cotton Men’s Solid Short Sleeve New (Other) S-3X $4-$7.50
This Gildan tee works great as an undershirt or on its own for a simple look.