Reon Pocket is a small portable air conditioner that can also serve as a heater. The device can be carried directly beneath the t-shirt.
Given the current heat, which is kept for some weeks in various regions of Russia, many will probably be happy to know that Sony began selling the original gadget (about it we wrote in last year), to effectively cool our body at 130C.
Tiny air comparable to a purse, can be inserted in a special inside pocket in the shirt. Connecting via Bluetooth to a dedicated app, you can control the temperature with your smartphone. It is interesting that the Japanese company says that the gadget can also serve as a heater that can warm our body in the cold season.