I'Z FRONTIER Cooling Peltier 3-Piece Inner Vest #107 Peltier Device Set I usually wear a size L, but this was a perfectly comfortable fit. [Product Condition] Like new, worn once after purchasing in 2024!! Of course, there are no stains, frays, or sun damage. The battery is fully charged and ready to use immediately!! ▢ Black color □ Display size / XL Width 51cm Length 58cm *Please note that there may be slight variations due to amateur measurements. *There are no smokers or pets in the house. *Please understand that this is a USED item. Please refrain from purchasing if you are sensitive to this. [Product Features] ■ The device contact area provides a high level of cooling, up to approximately -22°C below the ambient temperature, within about 10 seconds of turning on the power. Cooling the arteries effectively cools the entire body, reducing fatigue during intense heat. ■ Insulation material is used on the back of the dedicated battery pocket to block the heat from the battery, which is unavoidable during use. ■ The Peltier device is easily removable. Washing the garment is no problem as usual. Further cooling can be enhanced by coordinating with the Peltier device compatible compression wear #215 series. Layering with fan-equipped wear is also a great match, further enhancing comfort. ■ Double slider zippers, dot buttons, etc. are made by YKK, a Japanese company. We are particular about the quality down to the smallest details. Mesh material cooling function cool vest, with battery and instruction manual. - Type: Cool Vest - Color: Black - Material: Mesh - Accessories: Battery, Instruction Manual - Features: Cooling function - Design: Logo on the front Thank you for viewing.