Here\'s one for all you maths fans! Features an illustration of the pi symbol which is saying \"Get Real\" to root 1 (sometimes expressed as i) who is replying \"Be Rational\". As you maths geeks out there will no doubt already know, pi is not a rational number and root 1 is not a real number. Technically root 1 is being a bit hypocritical here as root 1 is not a rational number either, but maybe we\'re just thinking about this one too much! 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.