Recently Upgraded To Version 60.0 Funny 60th Birthday Shirt Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 50% Cotton, 50% Polyester Imported Machine wash cold with like colors, dry low heat Computer nerd humor 60th birthday gift idea Funny gift for any coder or gamer turning 60 years old Lightweight, Classic fit, Double-needle sleeve and bottom hem