Providing 'Body Cooling Suited to the Environment' for Workers: Mediaid to Relaunch 3 Heatstroke Prevention Items on April 15

Nihon Sigmax Co., Ltd. (Headquarters: Shinjuku, Tokyo; President: Yosuke Suzuki), which develops the Japan-born daily supporter brand 'MEDIAID,' will begin reselling three heatstroke prevention items on Wednesday, April 15. In recent years, heatstroke in the workplace has become increasingly serious. The number of casualties requiring four or more days of leave from January 1 to December 31, 2025, reached 1,681 (preliminary figure as of the end of December 2025), a significant 40.6% increase compared to the same period the previous year. The Ministry of Health, Labour and Welfare is urging workplaces to implement thorough heatstroke prevention measures. Furthermore, starting June 1, 2025, the revision of the Industrial Safety and Health Regulations will make heatstroke prevention mandatory with penalties, making corporate heatstroke measures an urgent priority. However, a survey of the construction industry (n=1,080) by the Ministry of Health, Labour and Welfare revealed that two out of three people in workplaces where heatstroke occurred were already wearing 'clothing with body cooling functions.' Since many of these were fan-equipped workwear, it is suggested that failing to adopt heatstroke measures suitable for high-temperature and high-humidity environments may not lead to sufficient effects. Given the recent rise in temperatures, the 'discomfort' and 'poor physical condition' caused by heat in work environments—such as commuting, outdoor work, and indoor work in high-temperature and high-humidity conditions—are becoming more severe. In response to this social background, Mediaid began developing and selling heatstroke prevention items in 2022, proposing 'heatstroke measures that can be selected according to the usage environment.' We have decided to resell these three items in 2026 so that workers can prepare early for the coming summer.