In late 2014, I tested out Hexoskin's first smart shirt, a vest that promised to monitor your vital statistics while you exercised. After a year in the lab, the company has rolled up to CES with a second-generation version of the wearable that comes with a couple notable changes. The first is that the battery life has been extended, with the firm promise that it'll last up to 30 hours on a single charge. After that, the most notable tweak has been to include Bluetooth Smart in the hardware, enabling it to connect to any compatible GPS, smartwatch or bike computer. In addition, the data that you create while out and about can now be exported to third-party fitness apps like Strava, Runkeeper and Endomondo.