The Heat Management System is a stainless steel heat regulating device for natural shisha coals. It is a closed system like the KALOUD LOTUS. The Heat Management System allows you to prolong your sessions thanks to a rotating system that regulates the airflow and therefore the heating of your hookah. The system is compatible with most shisha bowls. The Heat Management System is ideal for outdoor shisha sessions. We recommend that you place aluminum foil under the Heating Management System for optimal use.