Zephyr Dual-Zoned Cooling Camp Chair The Zephyr Dual-Zoned Cooling Camp Chair combines portable seating with an integrated water-circulation system designed to help you stay comfortable during extended periods outdoors. Using ice-cooled water circulated through both the seat and backrest, the Zephyr delivers adjustable cooling directly to the areas in contact with your body. Two operating modes allow you to balance cooling intensity with battery life, making it a practical option for athletic events, tournaments, camping, tailgating, and outdoor recreation.