[Yamazen] Cold Water Clothing DIRECTCOOL Water Cooling Clothing, Battery Included, Free Size, Water Cooling Vest, Pet Bottle Cooler DC-B02S(B) Black Used only once for indoor work. Product Description ● Recommended for work and leisure in the scorching heat. A water cooling vest that cools the body directly with cold water. ● Cools circulating water with a frozen pet bottle and sends cold water through tubes and a pump inside the vest. ● Unlike fan-equipped clothing, the clothes don't inflate, so protective clothing and uniforms can be worn over them. ● No fans mean no motor noise or wind noise, making it quiet. ● No need to worry about dust, so it can be used in various workplaces such as painting sites. ● Compatible with pet bottles up to 650ml, and the coldness lasts for up to about 3 hours. ● You can easily restore coolness by replacing the frozen pet bottle. ● Only 150ml of water is used. ● The battery is stored in the front for excellent operability. ● Equipped with a program function battery for long-term use, enabling long-term use. ● Color: Navy.