n+1 The Rules Bicycle T-Shirt Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 58% Cotton, 42% Polyester Imported Machine wash cold with like colors, dry low heat n+1 The Rules shirt (Bikes currently owned=N), How many bikes should a cyclist own? According to "The Rules", the answer is: n + 1 Minimum bikes owned is 3 but there is always room for one more bicycle. If you are a cyclists then you have to be aware of "The Rules". bicycle shirts, cycling shirts, bike t-shirts. Other famous rules are #5 and #9 This premium t-shirt is made of lightweight fine jersey fabric Fit: Slim (consider ordering a larger size for a looser fit)