Pythagorean Theorem Day 2017 8-15-17 geeky 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, Pythagorean Theorem Day is here and you need this t-shirt. The last *primitive* pythagorean triple day was 5-12-13, and the next one won”t be until 7-24-25. Get your shirt now to arrive before August 15, 2017. Some people call this pythagorean triple day, and that”s OK. Perfect gift for math geeks, or just geeks in general. Lightweight, Classic fit, Double-needle sleeve and bottom hem