"All sorts of huge machines are used by hospitals to monitor a patient’s vitals, but with the pace in which technology is miniaturizing, there are no real doubts about fabrics becoming the next genuine machines...
We’ve seen wearable technology on a maturing track, and the Vital Jacket is yet another case in point. Combining textiles with innovative medical diagnostic technology, BioDevices has unveiled this wearable vital-signs monitoring system." source
I love how this concept is both functional and aesthetically beautiful. They weren't shy about hiding the sensing materials and circuitry and use it as the main aesthetic element. As a runner who uses a hard-cased heart monitor, I would replace that with this product immediately. It provides freedom of movement and it's gorgeous.
For related postings, The Future of Things has a couple of interesting articles about bio-sensors integrated into clothing and the challenges inventors and designers are facing: