Amidst Record-Breaking Summer Heat, Sleep Experts Present "New Common Sense for Good Sleep" - Weathernews × Sleep Experts × Kurashi to Seikyo Propose Optimal Items for "Air Conditioning × Bedding"
Kurashi to Seikyo, the mail-order division of Japan Consumers' Co-operative Union, in collaboration with Weathernews and a sleep expert, is launching a special feature on "Air Conditioning × Bedding" for good sleep amidst the ongoing record-breaking summer heat in Japan. Following the intense heat of 2025, they advocate for the importance of bedding breathability and moisture-wicking properties, proposing carefully selected summer bedding and related products.
📋 Article Processing Timeline
- 📰 Published: May 11, 2026 at 20:00
- 🔍 Collected: May 11, 2026 at 11:31
- 🤖 AI Analyzed: May 12, 2026 at 02:17 (14h 45m after Collected)
Japan Consumers' Co-operative Union (JCCU, Chairman: Chitose Arai)'s mail-order division "Kurashi to Seikyo" conducted a roundtable discussion with weather information media Weathernews and Senior Sleep Instructor Naomi Adachi to examine "the sleep environment in Japan's continuing hot summers."
Based on the results, starting sequentially from May 11, 2026, a special feature on "Summer Good Sleep Measures" combining air conditioning and bedding will be released in the catalog "26 Neru Koto Seika-go" and on the "Kurashi to Seikyo" website.
**Weather Data Tells the Story: "Sleepless Summers" Becoming the Norm - Nighttime Temperature and Humidity Stealing Sleep**
In 2025, Japan experienced its hottest summer since statistics began. In recent years, there has been an increase in years where summer-like heat begins around the Golden Week holidays in May, and nighttime temperatures remain high.
*Scene from the roundtable discussion. Ms. Yamagishi, Weathernews caster, is on the right.*
Ms. Yamagishi, a Weathernews caster, introduced that in recent years, Japan has seen an increase in years where not only daytime but also nighttime temperatures remain high. In fact, according to the Japan Meteorological Agency, the average temperature in Japan from June to August 2025 was 2.36℃ higher than average, making it the hottest summer since statistics began (*1*). In such an environment, even with air conditioning, if humidity is high, the body may not release heat effectively, leading to difficulty falling asleep and shallow sleep.
(*1* Source: Japan Meteorological Agency "Weather in Summer 2025 (June-August)")
**New Common Sense for Good Sleep Taught by Experts! The Key is "Releasing Heat and Moisture" with Air Conditioning × Bedding**
Naomi Adachi, a Senior Sleep Instructor certified by the Japan Sleep Improvement Association, stated regarding the summer sleep environment: "Summer sleep measures primarily involve adjusting room temperature and humidity with air conditioning, but that alone is not enough. It is crucial how bedding helps release the heat and moisture that tend to accumulate in the body during sleep."
Therefore, when choosing bedding, she points out that focusing on "breathability," "moisture absorption and release," and "lightness and structure that do not hinder tossing and turning," and considering them in conjunction with air conditioning, are key points for creating a comfortable summer sleep environment.
*Senior Sleep Instructor Naomi Adachi*
**"Kurashi to Seikyo" Proposes Summer Bedding to Use with Air Conditioning**
From the popular summer bedding items that "Kurashi to Seikyo" has offered, they have re-examined the usage environment assuming combination with air conditioning and carefully selected products to introduce in the "26 Neru Koto Seika-go" catalog. Furthermore, they have also selected items that cater to each family member's summer lifestyle, such as loungewear for relaxing times in addition to sleep, and items for pets who are sensitive to heat.
As intense heat is becoming less exceptional, reviewing the sleep environment is becoming increasingly important. "Kurashi to Seikyo" will continue to propose solutions for summer living and sleep environments, both through products and information, by referring to weather data and expert knowledge.
**Overview of "26 Neru Koto Seika-go"**
Catalog publication date: May 11, 2026
(Special feature on the website will be released from May 12, 2026)
Summer Good Sleep Measures Special Feature
https://www.e-kurashi.coop/shop/list/index.html?cc=400526
Tie-up article with Weathernews
https://weathernews.jp/news/202601/300136/
"Kurashi to Seikyo" Special Feature Page
"Kurashi to Seikyo" website: https://www.e-kurashi.coop
"Kurashi to Seikyo" YouTube channel: Other products are also introduced in videos.
https://www.youtube.com/channel/UC0I0bnK1hHr1Y27USJX0UeQ
**■ Featured Products**
**Cooling "Million Ice Super" Bedding Series**
An upgraded model of the "Million Ice" bedding series, which was the best-selling item in the summer of 2025. The outer fabric has been upgraded, and the batting uses antibacterial, deodorizing, and anti-mite treated cotton. The back is made of mesh, designed to prevent heat and moisture from accumulating.
**Washed Cotton Fluffy Coverlet**
A quilt with batting that serves two purposes! Washed cotton feels smooth and comfortable.
**Washable 12.5cm Loft 70% White Duck Down Comforter**
"Features lightness that doesn't hinder tossing and turning and excellent moisture absorption and release."
Special price for JCCU's 75th anniversary. (*Special price valid until mid-summer 2026*)
**Breathair® Pillow**
Excellent fit with a three-dimensional shape. Structure designed to prevent heat accumulation.
**Million Ice Cooling Pet Bed**
A summer bed made with cooling fabric for pets sensitive to heat, creating a comfortable space for them.
**Easy One-Piece Dress with Built-in Cups**
A home dress with built-in cups, allowing you to wear it without a bra.
Based on the results, starting sequentially from May 11, 2026, a special feature on "Summer Good Sleep Measures" combining air conditioning and bedding will be released in the catalog "26 Neru Koto Seika-go" and on the "Kurashi to Seikyo" website.
**Weather Data Tells the Story: "Sleepless Summers" Becoming the Norm - Nighttime Temperature and Humidity Stealing Sleep**
In 2025, Japan experienced its hottest summer since statistics began. In recent years, there has been an increase in years where summer-like heat begins around the Golden Week holidays in May, and nighttime temperatures remain high.
*Scene from the roundtable discussion. Ms. Yamagishi, Weathernews caster, is on the right.*
Ms. Yamagishi, a Weathernews caster, introduced that in recent years, Japan has seen an increase in years where not only daytime but also nighttime temperatures remain high. In fact, according to the Japan Meteorological Agency, the average temperature in Japan from June to August 2025 was 2.36℃ higher than average, making it the hottest summer since statistics began (*1*). In such an environment, even with air conditioning, if humidity is high, the body may not release heat effectively, leading to difficulty falling asleep and shallow sleep.
(*1* Source: Japan Meteorological Agency "Weather in Summer 2025 (June-August)")
**New Common Sense for Good Sleep Taught by Experts! The Key is "Releasing Heat and Moisture" with Air Conditioning × Bedding**
Naomi Adachi, a Senior Sleep Instructor certified by the Japan Sleep Improvement Association, stated regarding the summer sleep environment: "Summer sleep measures primarily involve adjusting room temperature and humidity with air conditioning, but that alone is not enough. It is crucial how bedding helps release the heat and moisture that tend to accumulate in the body during sleep."
Therefore, when choosing bedding, she points out that focusing on "breathability," "moisture absorption and release," and "lightness and structure that do not hinder tossing and turning," and considering them in conjunction with air conditioning, are key points for creating a comfortable summer sleep environment.
*Senior Sleep Instructor Naomi Adachi*
**"Kurashi to Seikyo" Proposes Summer Bedding to Use with Air Conditioning**
From the popular summer bedding items that "Kurashi to Seikyo" has offered, they have re-examined the usage environment assuming combination with air conditioning and carefully selected products to introduce in the "26 Neru Koto Seika-go" catalog. Furthermore, they have also selected items that cater to each family member's summer lifestyle, such as loungewear for relaxing times in addition to sleep, and items for pets who are sensitive to heat.
As intense heat is becoming less exceptional, reviewing the sleep environment is becoming increasingly important. "Kurashi to Seikyo" will continue to propose solutions for summer living and sleep environments, both through products and information, by referring to weather data and expert knowledge.
**Overview of "26 Neru Koto Seika-go"**
Catalog publication date: May 11, 2026
(Special feature on the website will be released from May 12, 2026)
Summer Good Sleep Measures Special Feature
https://www.e-kurashi.coop/shop/list/index.html?cc=400526
Tie-up article with Weathernews
https://weathernews.jp/news/202601/300136/
"Kurashi to Seikyo" Special Feature Page
"Kurashi to Seikyo" website: https://www.e-kurashi.coop
"Kurashi to Seikyo" YouTube channel: Other products are also introduced in videos.
https://www.youtube.com/channel/UC0I0bnK1hHr1Y27USJX0UeQ
**■ Featured Products**
**Cooling "Million Ice Super" Bedding Series**
An upgraded model of the "Million Ice" bedding series, which was the best-selling item in the summer of 2025. The outer fabric has been upgraded, and the batting uses antibacterial, deodorizing, and anti-mite treated cotton. The back is made of mesh, designed to prevent heat and moisture from accumulating.
**Washed Cotton Fluffy Coverlet**
A quilt with batting that serves two purposes! Washed cotton feels smooth and comfortable.
**Washable 12.5cm Loft 70% White Duck Down Comforter**
"Features lightness that doesn't hinder tossing and turning and excellent moisture absorption and release."
Special price for JCCU's 75th anniversary. (*Special price valid until mid-summer 2026*)
**Breathair® Pillow**
Excellent fit with a three-dimensional shape. Structure designed to prevent heat accumulation.
**Million Ice Cooling Pet Bed**
A summer bed made with cooling fabric for pets sensitive to heat, creating a comfortable space for them.
**Easy One-Piece Dress with Built-in Cups**
A home dress with built-in cups, allowing you to wear it without a bra.