The PoloTech Shirt from Ralph Lauren with OMsignal technology contains Bluetooth data reading sensor that measures heart rate, breathing, and calories burned as you workout. Main sensor itself houses an accelerometer and a gyroscope. Three additional sensors are woven into the fabric of the shirt itself, across the chest.
The shirt material is made of 70% polyester, 21% nylon, 9% spandex, exclusive of trim and is machine washable. The shirt feels very tight and hard to take it off after a workout.