Square Root 121 for 11th Birthday 11 Years Old T-Shirt-TH

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, Birthday gifts t-shirt for someone who adore math, mathematics, math professor, math teacher, math geek, math nerdy, who has son and daughter was born in 2006, the best present for boys and girls 11th birthday. Lightweight, Classic fit, Double-needle sleeve and bottom hem