"The Tee is Unisex so we suggest sizing 1 size down if your prefer the tee to be more fitted. Model is wearing a size small."
This is listed under the description. The shirt I received was tightly fit (by going one size down as suggested)...it was not boxy like a Unisex normally is. I'm not sure if this was an anomaly, but for me, sizing down didn't work, so it will now have to be a gift. I am normally a medium, and I sized down to a small (which I can wear a small, depending on the brands)
I'm a regular customer, and true to size in most items work, or at times they are a little big or arm length a little too long, but a little big is better than too small.
Be careful in your choice to sizing down.
I love my All Black Glitter AKA long sleeve T shirt. Long sleeves are perfect for this time of year or if you're a person who is always cold.