21st Birthday Shirt – Square Root of 441 Long Sleeve Shirt-TH

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, Fun and; comfy 21 yrs old math long sleeve shirt featuring a simple mathematics problem on a math shirt to make your son, daughter, brother, sister, kids, children or child smile on their twenty first birthday, 21st bday. A great geeky nerdy math shirt 21 year old birthday gift idea for a proud math geek, math nerd, science fan, science geek or science nerd. Great basic math square root shirt for men and women, unisex, on 21st birthday. For a loose fit, order a size up. Lightweight, Classic fit, Double-needle sleeve and bottom hem