Thank you for looking at my listing among many others. ✦ Free Shipping, Brand New, Immediate Purchase OK! ✦! Guaranteed to be in working order. We offer this at a price that is definitely cheaper than Amazon. Reference Price at Time of Listing: [Amazon Price: ¥13999] [Latest PCM Material & Comfortable Cooling] PCM material is 30% lighter than water, realizing incredible ease of movement. You can enjoy comfortable cooling for extended periods. Regardless of the environment, the cooling effect lasts for up to 4 hours within a perceived temperature range of 22-28℃. The cooling sensation continues even after wearing, making it very convenient for heatstroke prevention. Enjoy comfortable days with excellent cooling effects! [Excellent Breathability] 57 PCM modules are arranged regularly, adhering to the body while creating gaps in the center of each module to ensure smooth circulation of cool air. [No Charging Required & Reusable] No batteries are needed, so there's no hassle of charging, making it very convenient. It also has excellent reusable properties, comfortably supporting your daily life. Furthermore, it naturally refreezes in environments below 28℃, allowing for efficient repeated use. (Cooling can be accelerated by wetting it with water. After about 20 minutes of exposure in an environment where the water temperature is below approximately 18℃, the cooling function will be fully restored. Additionally, freezing time can be further shortened by using a refrigerator, ice bath, or cold water.) [Slim Design] We offer a design that achieves an overwhelming fit. With a slim design of just under 15mm, it can be comfortably worn as an inner layer. The design does not hinder body movement and is also designed with quietness in mind, allowing you to use it with peace of mind while wearing it. Size adjustment is completely free. It supports waist sizes from 74cm to 102cm and bust sizes from 88cm to 106cm, providing an optimal fit for various body types. Easy and finely adjustable size adjustment is possible using the belts on the back and sides of the main unit. The free-size design accommodates a wide range of sizes from general M to XL (waist approx. 74cm-102cm / bust approx. 88cm-106cm). If you have any questions, please feel free to comment.