This military-style cotton t-shirt is bad as fuck.
The darker coloring in the camo model outlining your silhouette is designed to make your shoulders look bigger.
Its zipper helps regulate body temperature, and its elastic, medium-thickness cotton (.35kg) and polyester material keeps it solid yet comfy and easy to wash.
Sizes are unreliable across different manufacturers. Measure yourself to select a good fit (see chart). Or if you're a lazy ass, just include your height and weight in the notes section during checkout.