Uniqlo Navy & White Striped Long Sleeve

Reposhing this item I purchased from @jjinsoul. Loved it, but ready to rotate for something new. Questions? Leave a comment below! Uniqlo is known for their quality! This shirt is a great, soft material but I can't tell what it is (I believe cotton). This was my 1st purchase with this brand, I am definitely a MED not a LARGE which is the only reason I'm re-selling! Classic, simple top. Navy & white.