Get the latest tech news
Sony Wearable Thermal Device
REON POCKET is a wearable thermal device that can directly cool or warm the part of the body that the device is in contact with.
he REON POCKET TAG’s sensing functionality such as direct sunlight detection*1 has been improved, reducing the time taken to adjust the temperature to suit your environment and quickly providing you with optimal cooling for the situation. This shape extends above the collar while matching the curve of your neck and back, expelling heat efficiently without standing out when worn with business clothing. The adjustable flexible mechanical tube, shape-holding wire frame and the silicone rubber that covers them provide a soft, comfortable feel even when worn for long periods of time.
Or read this on Hacker News