This unisex hoodie is inspired by the tees worn by everybody\'s favourite professor - Dr. Sheldon Cooper! The hooded top features a distressed, vintage-look print of the number 73 within a circle. As fans of The Big Bang Theory may know, 73 is the best number! Why? Because 73 is the 21st prime number, its mirror 37 is the 12th and its mirror 21 is the product of multiplying, hang on to your hats, 7 and 3. This is a hard wearing 80% Cotton, 20% Polyester hoodie, and has coloured draw chords, double lined hood, and a front pocket. Inspired by and worn by Sheldon (Jim Parsons), not official merchandise. Sustainability Message All 8Ball Originals garments are WRAP certified, REACH compliant and Fair Labor Association accredited. They are printed in UK using Oeka-Tex and GOTS certified water-based inks.