Cooling Performance: Equipped with a powerful cooling mode of minus 18 degrees Celsius and a weak cooling mode of 12 degrees Celsius, 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 Celsius, and effectively manages temperature with a total of six attachment points around the neck and back. It combines outstanding fit and ease of movement thanks to the power stretch material (88% nylon, 12% polyurethane). In addition to the 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 its stylish design based on black and accented with red zippers, it combines practicality and design. Everything is included, so you can use it immediately as a cooling Peltier vest. The size is XL. *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).