1、Cooling Vest for Outdoor Work: Stay comfortable and cool with this adjustable vest made of polyester and TPU materials. Equipped with a safe cooling solution, it can keep you dry in humid environments. 2、Multifunctional Cooling Gear: This vest is perfect for people with heat sensitive conditions or working in hot environments. It is suitable for gardening, mowing, and other outdoor activities to resist the heat all year round. 3、Easy Operation: Simply add water and ice to the ice bag, connect to a 5V 1A or 5V 2A USB power bank(not included), put on the vest, and switch it on for a cool and refreshing experience. 4、Comfortable and Lightweight Design: The vest is designed for comfort and functionality. It is lightweight, easy to maintain, and ensures a comfortable fit for all day wear. 5、Long Lasting Cooling Power: With a 3.5L water bag capacity, the vest can work for up to 7.2 hours when connected to a 10000mAh power bank(not included). Hand wash with cold water and air dry for best maintenance. Item Type: Summer Cooling Vest Material: Polyester, TPU Uses: This Vest Is a Versatile and Safety Conscious Heat Relieving Tool, Ideal for People with Heat Sensitive Conditions, Those in Heat Related Occupations, Or Anyone Looking to Stay Cool During Outdoor Activities Such as Gardening or Mowing Lawn. It's Perfect for Cooling off in Any Season Power Supply: 5V1A or 5V2A USB Interface Power Bank Water bladder capacity: 3.5L Working Time: Depends on the Capacity of the Power Bank. When the Power Bank Is 10000mah (36wh), The Working Time Is 36/5=7.2h Washing Suggestion: It Is Recommended to Wash by Hand in Cold Water and Dry Naturally After Washing. Do Not Machine Wash, Dry Clean or Iron 1 x Vest 2 x Straps 1 x Instruction Manual