I purchased this new for around 25,000 yen and wore it about three times. Each component has been wiped with alcohol, and the vest has been hand-washed once. Size is free. All original accessories are included. Set Contents: IC101 Vest x 1 IC01 Compact Battery x 1 IC01-1 Peltier Fan Unit x 3 IC01-2 Fan Cable x 1 IC01-3 Charging Cable (USB Type-C) x 1 Cooling Performance: Equipped with a powerful cooling mode of minus 18 degrees and a weak cooling mode of 12 degrees, allowing for two-stage temperature adjustment. Stretch Material: Uses power mesh material (88% nylon, 12% polyurethane) for excellent elasticity and a comfortable fit. BURTLE's Ice Craft Vest, equipped with innovative cooling technology, establishes a new standard for heat countermeasures. It features a Peltier fan unit capable of cooling down to an astonishing minus 18 degrees, and effectively manages temperature with a total of six attachment points around the neck and back. It combines an outstanding fit and ease of movement thanks to the power stretch material (88% nylon, 12% polyurethane). In addition to two-stage cooling adjustment (strong: -18 degrees, weak: -12 degrees), it also features a sway mode function that provides a comfortable cooling cycle. The compact battery allows for up to 3.5 hours of continuous use and achieves a powerful airflow of 85 liters per second. With a stylish design based on black with red accent zippers, it combines practicality and design. Everything is included, and it can be used immediately as a cooling Peltier vest. The size is free size. Although the hot season is coming to an end, it's still continuing, so I'm offering it at a significantly reduced price. Please consider purchasing it.