Sizes Aren't Accurate

The print is great. After the first wash, still looking good so far. The quality of the shirt itself is so-so. I own a lot of t-shirts, and I'd put them on the middle to lower end of the spectrum in terms of quality. I've ordered custom printed t-shirts from other sources, like Red Bubble, and the quality of their shirts is much higher. They cost more too. Which is probably why. But, back to the Sticker Mule shirt... after washing, I have to stay that the large size easily shrunk to a medium, maybe smaller. So, I'm not sure Sticker Mule understands t-shirt sizing. I'd recommend you order one size larger at least, maybe two. Otherwise, you're bound to be disappointed. Finally, weirdly the neck opening is smaller than other shirts. I don't know what that's about. But, when wearing the shirt even prior to wash, I was noticing it feel amost like a turtleneck in terms of how tightly it's around my neck. I was just comparing my Large size Sticker Mule shirt to others in my collection that are pretty much unworn/brand new, and it's a noticeably smaller neck opening. Very odd. Whomever is sourcing the raw material for Sticker Mule isn't getting it done. I'm sure they're probably ordering shirts from Vietnam, or some such similar country, but they need to reevaluate these choices.