BRAIN SLEEP Co., Ltd. (Head office: Chiyoda-ku, Tokyo; Representative Director: Atsushi Hirota; hereinafter "BRAIN SLEEP") has developed and sells the "BRAIN SLEEP Cool" series of functional cooling bedding, a solution to sleep problems unique to summer. Since its launch in 2023, demand has continued to grow due to the increasing severity of heat waves and high temperatures and humidity. Cumulative sales for fiscal year 2024 increased by 165% year-on-year, and in the comforter category, sales from April to May 2025 exceeded 200% compared to the same period last year, showing remarkable growth. Many people do not use a comforter on hot summer nights, but in fact, using a comforter can help prevent overcooling. The "BRAIN SLEEP Comforter Cool" series is a product with the new concept of "cooler when worn."BRAIN SLEEP products are primarily sold online through the "BRAIN SLEEP Official Website," but we have received many requests from customers who want to experience the products in person, so we are actively strengthening our offline presence. We will now begin selling the Cool Series at "Tokyo Interior Kisarazu Store" as a place where customers can experience and purchase our products. The cause of Japan's hot summers isn't just temperature! Japan's summers are getting hotter each year, and on June 17, 2025, nine locations across the country recorded their highest June temperatures ever observed. *1 This summer is also predicted to be hotter than usual. In recent years, not only has the outside temperature risen significantly, but so has the humidity, with data showing an increase of about 15% compared to 2004, twenty years ago. *2 As outside temperatures and humidity rise, so do indoor temperatures and humidity. Japanese houses, in particular, are well insulated, which can lead to heat being trapped indoors overnight. While the number of uncomfortable nights increases in the coming season, discomfort is greatly affected not only by room temperature but also by "humidity." Research has shown that when humidity increases from 55% to 70% at the same room temperature (20°C), deep sleep duration decreases by 25 minutes. *3To achieve high-quality sleep, it is important to use optimal bedding and create a comfortable sleeping environment. Even in summer, if an appropriate comforter is not used, the body temperature may drop too much due to the heat of vaporization when sweating, or the body may become chilled directly from the cool air of the air conditioner. It is often thought that "it is cooler not to use a comforter in summer," but the "BRAIN SLEEP Comforter Cool" series overturns this common belief and provides coolness by using a comforter. *1 Japan Meteorological Agency "Observation History - Update Information on Highest Values"*2 From Japan Meteorological Agency "Past Weather Data" (Calculated average humidity in Tokyo for the three months of June-August from 2004-2024 for each year)* 3 Cao T, et al. J. Build. Eng., 2021 Cooler when worn?! Features of the "BRAIN SLEEP Comforter Perfect Cool EX" 1. [Equipped with triple cooling technology] The highest level of coldness that lasts all night The Perfect 4-layer structure provides contact cooling, moisture-absorbing cooling, and sustained cooling for a comfortable sleep.By developing the yarn and fabric from scratch, the contact cooling value achieved the highest level of 0.524, which is approximately 260% of the standard value of 0.2 (a slight coolness when touched), demonstrating ultimate contact cooling. In addition, it is equipped with innovative moisture-absorbing cooling technology that converts moisture absorbed during sleep into a cooling sensation. Furthermore, the comforter's fibers are blended with PCM, an innovative cooling technology developed for space suits, encapsulated in microcapsules. While ordinary contact cooling bedding loses its cooling properties when the absorbed heat becomes saturated, this product has a sustained cooling function that revives the cooling sensation when the futon and body separate due to tossing and turning during sleep. 2. Reversible structure with cool and dry sides for long-term use The reversible structure allows for long-term use and provides a light feel and comfortable breathability. On tropical nights, you can choose the cool side for maximum coolness, and on days when humidity is more of a concern than heat, you can choose the dry side with gentle cooling and a two-layer ventilation structure. 3. Clean and deodorized with home washing It can be easily washed at home, and since it is used without a cover, it is easy to maintain. ＜Product Details＞ Product name: BRAIN SLEEP Comforter Perfect Cool EXPrice (tax included): Single ¥24,200, Semi-double ¥29,700, Double ¥35,200URL :https://brain-sleep.com/products/comforter_perfectcoolex Experience and purchase the "BRAIN SLEEP Cool" series! While sales are primarily conducted through the "BRAIN SLEEP Official Website," starting July 5, 2025 (Tuesday), the Tokyo Interior Kisarazu Store will offer a limited-time opportunity to experience and purchase the "BRAIN SLEEP Cool" series, our cool products designed to help you get through Japan's harsh summer, in addition to our signature BRAIN SLEEP products. Period: July 5 (Sat) - September 30 (Tue), 2025 *Dates are tentative and may be extended without prior notice.Business Hours: Weekdays 10:30 AM - 7:30 PM, Weekends and Holidays 10:30 AM - 8:00 PMLocation: Tokyo Interior Kisarazu Store (3-1-2 Kaneda Higashi, Kisarazu City, Chiba Prefecture 292-0009)Main products handled: "BRAIN SLEEP Pillow" series, "BRAIN SLEEP Mattress" series, "BRAIN SLEEP Comforter" series, "BRAIN SLEEP Wear" series Other stores are listed below.https://brain-sleep.com/pages/shop_information
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