Sauna Subscription 'FLEXKEY' for Daily Access Opens New Member Recruitment on June 1st (Mon)

FLEXKEY, a subscription service for sauna and bathing facilities limited to low-traffic hours, provided by OPTIMIST Co., Ltd., will begin recruiting new members on Monday, June 1, 2026. FLEXKEY is a subscription service that allows users to visit all partner facilities once a day for a monthly fee of 5,900 yen (6,490 yen including tax). Focusing on the challenge facilities face with 'low-traffic hours such as weekday afternoons and late nights,' the service provides access during these times. Users can utilize high-quality sauna and bathing facilities at a more affordable price by taking advantage of 'free time' when facilities are less crowded, while facilities benefit from the effective use of idle time, creating a 'win-win' situation for both. Under the concept of 'Turning saunas from entertainment into a daily routine through subscriptions,' FLEXKEY aims to transform saunas from a special experience into a daily health habit. A key feature is the ability to choose a facility from all partner locations based on your mood or usage scenario for the day, allowing you to enjoy various sauna and bathing facilities in your daily life, such as refreshing your mind and body during work or school breaks, or visiting popular facilities you've been curious about on weekends.