Ask anything before you spend £45 on a shirt from someone you've never heard of.

Messages come straight to us and we answer them ourselves, usually within a day — sometimes two if it's the weekend. Use the form below or email underthecollaruk@gmail.com directly; it's the same inbox either way. If Instagram is easier than a form, DM us there instead — we read those too. There's no phone line, so a message is the quickest way to reach us. If you don't hear back, assume it went astray rather than that you're being ignored, and send it again.

Worth saying: sizing questions are the ones we'd most like you to ask before ordering rather than after. There are two sizes and they're both cut generously, so if you're between them, tell us your usual size and what you want it to feel like and we'll give you a straight answer — including if the answer is that neither will fit the way you want.