16th Birthday T-Shirt Square Root of 256 Sweet 16 Years Old-T-Shirt

Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 65% Cotton, 35% Polyester; Imported; Machine wash cold with like colors, dry low heat; This is a fun math T-shirt for a 16 yrs old featuring a simple mathematics problem on a math shirt to make your son, daughter, kids, children, child smile on their sweet sixteenth birthday, 16th bday.; A great geeky nerdy math tee shirt 16 year old birthday gift idea for a proud math geek, math nerd, science fan, science geek or science nerd. Great basic math clothing for boys and girls, unisex. 16 yrs old shirt. For a loose fit, please order a size up.; Lightweight, Classic fit, Double-needle sleeve and bottom hem