The Kitsune "Box" T-Shirt is printed on a comfortable sueded jersey cotton fabric here in the US.  The rich dark green color has a subtle touch of that heather look. The fabric is a cotton/polyester blend which keeps it lighter and more resistant to shrinkage. 

• 60% combed cotton, 40% polyester
• Tear-away inner label
• 4.3 oz fabric weight
• Printed in USA
• Standard fit

These tees are standard fit, not a slim-fit/athletic cut. so it's safe to size down one notch if you prefer a slimmer fitting tee. For reference, the model is 6'2" and 175 lbs, wearing an unwashed Medium (he could wear a large as well, but since he's taller and leaner, Medium achieves a slimmer fit).