Great paper on AppleInsider about Hexoskin's US launch.
"The $399 Hexoskin biometric smart shirt is now available for purchase in the U.S., giving athletes the ability to measure, track and improve their performance in real time, with data on heart rate, breathing and more.
The shirt is available in both men's and women's styles, ranging from extra small to extra large, and additional shirts without the recording device cost $169 apiece.
When connected to the free iOS Hexoskin app, the shirt provides access to real-time metrics including heart rate, breathing rate, minute ventilation, pace, steps, speed, distance and more.
The Hexoskin is advertised to be safe for any kind of activity, and is designed and assembled in Canada. Data readouts from the shirt can be accessed in their raw format, and an open data API allows researchers or enthusiasts to utilize their own analytics software.
Among those said to use Hexoskin are the Brooklyn Nets basketball team, Sochi 2014 moguls Olympic medalists the Dufour-Lapointe sisters, and NASA and the Canadian Space Agency."