This is the Workman Peltier Vest 2025 model. I used it once for golf, but I no longer plan to use it, so I am selling it. This is a free-size vest with both cooling and heating functions. It can cool to a maximum of -28°C and heat to 39°C. - Brand: WindCore - Model: PRO model - Functions: Cooling and heating - Temperature range: Cooling max -28°C, Heating max 39°C - Size: Free size - Cooling speed: Cooling starts in 1 second Everything in the photos is included. Please understand that this is a used item. Thank you for your consideration.