Fairly comfortable, viscose. Regular fit. Tight on my biceps when I raise my arms, and tight on the triceps when I bring my elbows close together. I brought it to a tailor to let the seams out, but there wasn’t enough string to do so. As much as Ansel likes this shirt, I can’t wear this for dancing because of the restricted upper arm mobility.
Decent for just going out to eat. If you have upper arm or back muscles, I advise against buying regular fit shirts like these from Criminal Damage, unless you’re willing to go up a size and have it altered.