Swift Pigeon Apparel I Can't Keep Calm I'm A Drummer Mens Long Sleeve T-Shirt Shirts are 100% pre-shrunk cotton for a comfortable fit (Athletic Gray is a 90/10 cotton-polyester blend). Long set-in sleeves with rib knit cuffs for stretch and recovery. Seamless rib knit collar. Taped neck and shoulder and two-needle hemmed bottom for durability. All graphics are applied with an INDUSTRIAL heat press.