Attachment of wearable devices

Air cooling system may be incorporated in the garment to cool down body temperature in the hot weather. Very light weight fans can be attached in the shoulder area like normal fans to provide air flow to cool down body temperature. Some air cooling garment use compressor to pump pre-chilled air into a bladder and then force the air to circulate around the body through the tube.

Liquid cooling system is also used which includes fluid reservoir, a circulating pump and connecting hose, which is attached to the garment. The liquid is circulated through the garment and then return to the reservoir for re-chilling. One of the liquid cooling and ventilation garment ( LCVG ) is used by the astronauts of NASA.22 Ice or cold pack system uses ices or gelled coolant to keep the body cool, but the duration is shorter and needs replenishment. All these three types of attachment is not common for daily use, as the electronics and extra equipments hinder normal activities.