Pedometers were the first sports wearable and now seem almost quaint. Today's wearables have grown in capabilities and formats, providing complex data on your overall fitness and easily integrates into your lifestyle. Smart watches, fit bits, simple pedometers and high-tech clothing are part of the multi-billion-dollar business that is the smart sports and fitness wearable industry. These products generated 3.5 billion in revenues in 2014 and sales are anticipated to reach 14.9 billion by 2021. Fitness trackers are the most broadly used sports wearables and provide information about the number of steps taken, calories burned, and stairs climbed although some also include heart rate and sleep pattern monitoring, and GPS tracking.