I have purchased this shirt in many sizes to decorate as gifts for others. I recently purchased it to make a school spirit shirt for my son who is wearing size 14s or XLs in most brands and this shirt is slightly large on him. He has many gildan, fruit of the loom, hanes and other brands from Jiffy and usually a youth XL is a perfect fit for him. These are nice, thick, cotton tees and are great quality.