21 year old 21st Birthday Gift Idea: Square Root of 441 Tee-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, Funny 21 year old 21st Birthday Gift Idea – Square Root of 441 T-Shirt. When everyone figures out what it means during your birthday party, they will absolutely LOVE the idea. Square Root of 441 21 yr old best birthday b-day bday geek nerd math tee. Square root of 441 – 21st birthday gift idea. Shirts tend to run tight, for a looser fit, please order a shirt one size up. This is a PERFECT birthday gift for anyone about to turn 21 years old, so pick one up TODAY for his / her special day!, Lightweight, Classic fit, Double-needle sleeve and bottom hem