If you have an invisible disability or know someone who does then this shirt will fit the need perfectly. From Chronic kidney disease to Aspergers, Cystic Fibrosis, Cancer, Diabetes, MS, COPD, IBS, MG, LUPUS, Fibromyalgia, Arthritis, Depression, TBI, PTSD, RA, Chronic Fatigue Syndrome and so many more. Show the world that not ALL disabilities are VISIBLE. So very many you just can't see. Order yours today and be sure to check out both front and back of shirt.