That really is Dan's signature. And, yes, he used a Sharpie -- a wooden one.
This is a classic tee that has a light feel. Made of 100% ringspun cotton (except for heather colors, which contain 10% polyester).
• 100% ringspun lightweight cotton
• Pre-shrunk
• Tubular construction
• Shoulder-to-shoulder tape
• Seamless collar
• Double-needle sleeve and bottom hem