※ Yellowing present [Size: M Air-Conditioned Fan Vest - Heatstroke Prevention] Beat the summer heat in 2024! Our air-conditioned workwear features two fans at the waist that draw in external air, circulating it within the garment. This vaporizes sweat on the skin's surface, removing heat and lowering skin temperature. It also suppresses sweat production, reducing water loss and helping to maintain the body's water and salt balance, thus preventing heatstroke in the scorching sun. [Perfect for Various Scenes] Ideal not only as workwear for construction sites, farming, and transportation, but also for leisure activities such as fishing, hiking, golf, camping, cycling, and other outdoor activities. [Product Specifications] Air-conditioned wear x 1, fans x 2, USB cable * 1, Japanese instruction manual * 1. ※ Mobile power supply is not included, please purchase separately. To ensure the fans function correctly, please use a 5V 2A power supply.