The number of cyclists is growing rapidly all across the U.S. The National Household Travel Survey showed that the number of trips made by bicycle more than doubled from 1.7 billion in 2001 to 4 billion in 2009. The trend is only going up. Biking to work is good for your wallet, health and happiness. Just one hour of riding could burn up to 500 calories and according to research, the average person loses 13 pounds their first year of bike riding. The following list is based on customer reviews and tests done by sites such as Outside Online and Outdoor Gear Lab.