100% polyester.
If this looks how you want to wear it, then go for it. These are cheap printed garments overpriced due to poor quality.
Gildan Performance Men's π Clothing and Shirts with Moisture-Wicking Polyester
44 Review
Calvin Klein π Herringbone Sleeve Men's Dress Clothing
50 Review
π Nantersan Placket Raglan Tee - A Casual Must-Have
52 Review
H2H Mens Casual Slim Fit Short Sleeve T-Shirts Cotton Blended Soft Lightweight V-Neck/Crew-Neck
46 Review