Cooling Performance: Equipped with a powerful cooling mode of -18 degrees Celsius and a weak cooling mode of 12 degrees Celsius, allowing for two-stage temperature adjustment. Stretch Material: Made with 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 -18 degrees Celsius, 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 Celsius, weak: -12 degrees Celsius), 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, so you can use it immediately as a cooling Peltier vest. The size is free size. *Please note that we are closed on weekends and holidays, so we will not be able to contact you. *We do not offer discounts. *Due to being a special sale item, we only handle initial defects (within 8 days of product arrival).