Adult FREE Size] Workman WindCore Heated Half Coat Black - Wearable Kotatsu *Batteries not included. Please purchase separately. (Please check the compatibility chart and purchase the separately sold WindCore dedicated battery.) ●Product Description - There is a temperature control switch inside the right side pocket. - Can be worn with string ties, and tightening the ties increases the contact of the heater. - Can be used for everyday wear, and it's a convenient vest that becomes a heated half coat when using the separately sold WindCore dedicated battery. For energy saving, outdoor activities, camping, car camping, loungewear, etc.