Selling out immediately after release! Parasols adopting the radiative cooling material 'Radi-Cool' are back this season. Moonbat launches 'REIKYAKU Parasol' using Radi-Cool Japan's T-series fabric.
Radi-Cool Japan, in collaboration with Moonbat, has launched the 'REIKYAKU Parasol', a sun/rain umbrella using the zero-energy radiative cooling material 'Radi-Cool'. The technology, which emits heat, is also applied to building paints for energy saving.
📋 Article Processing Timeline
- 📰 Published: April 24, 2026 at 23:00
- 🔍 Collected: April 24, 2026 at 14:31
- 🤖 AI Analyzed: April 24, 2026 at 20:11 (5h 39m after Collected)
Radi-Cool Japan Co., Ltd. (Headquarters: Chuo-ku, Tokyo, CEO: Jun He, hereinafter referred to as 'our company') has launched the 'REIKYAKU Parasol', a sun and rain parasol using radiative cooling technology, jointly developed with Moonbat Co., Ltd. (Headquarters: Shimogyo-ku, Kyoto, CEO: Nao Kamata).
Since its release, this series has garnered attention for its revolutionary cooling performance and sold out at a pace exceeding expectations last year.
■ What is the radiative cooling material 'Radi-Cool'?
The radiative cooling material 'Radi-Cool' is a technology that efficiently radiates received heat outwards without using any energy. By combining high solar reflection performance and heat dissipation characteristics, it intensively radiates heat to the 'atmospheric window' (8-13 μm band), suppressing heat accumulation on the product surface even during the day.
Centered on the innovative environmental technology of 'cooling with zero energy,' our company will develop multifaceted heat countermeasures, from personal heatstroke prevention to corporate decarbonization and energy-saving solutions. (*As a radiative cooling technology that cools objects without energy consumption under direct sunlight)
■ Lifestyle Field: Application of technology to parasols
Unlike ordinary parasols that 'block sunlight (thermal insulation),' the 'Radi-Cool T Series' adopted for Moonbat's 'REIKYAKU Parasol' also has the function of 'releasing heat (radiative cooling).' As a result, the surface of the umbrella is less likely to retain heat even under the blazing sun, realizing a 'portable shade' that dramatically lowers people's sensible temperature.
■ Lineup
Folding umbrella 50cm (lightweight specification): ¥6,600 (tax included)
Folding umbrella 54cm (wind-resistant specification): ¥7,700 (tax included)
Folding umbrella 60cm (wind-resistant specification): ¥8,250
Folding umbrella 50cm (lightweight) / Folding umbrella 54cm (wind-resistant) / Folding umbrella 60cm (wind-resistant)
[The Expanding Potential of Radi-Cool: Heat countermeasures with paints and films]
Radi-Cool's radiative cooling has been commercialized not only in fabrics but also as films and paints, providing optimal 'cooling' solutions according to the usage environment and target objects.
We have a proven track record in various fields, including general buildings, outdoor equipment, commercial facilities, factories, warehouses, and even transportation infrastructure.
Most recently, in a demonstration experiment with Fukuoka City, we announced results that substantiate its remarkable cooling effect and contribution to reducing environmental loads.
(Verification results are here)
Appearance after painting the Hakata Port Bayside Museum
Air conditioning power consumption: Maximum 31.7% reduction (Average 18.1% reduction) / Roof surface temperature: Maximum 34.3℃ reduction / Attic temperature: Maximum 9.7℃ reduction
■ From 'Cooling' to 'Energy Saving Solutions'
Because Radi-Cool continues to release heat at night using the 'atmospheric window,' buildings can start the next morning in a cooled state (pre-cooled state), significantly reducing the start-up load of air conditioners. This achieves both cost reduction and decarbonization (Scope 2 reduction). From improving the working environment, such as preventing heatstroke, to acting as a specific 'energy-saving solution' that supports companies in realizing carbon neutrality, we will accelerate further expansion in the future.
■ Company Profile
Radi-Cool Japan Co., Ltd.
Representative: Jun He, President and CEO
Location: Nano Park, 5F Kisuke Nihonbashi Muromachi Bldg., 4-4-3 Nihonbashi Muromachi, Chuo-ku, Tokyo
Industry: Development, manufacturing, and sales of Radi-Cool radiative cooling materials
Capital: 100 million yen
URL: https://www.radi-cool.jp/
Online Shop: https://radi-cool.shop/
*Radi-Cool Japan Co., Ltd. is an affiliated company of Taiga Jitsugyo Co., Ltd.
Since its release, this series has garnered attention for its revolutionary cooling performance and sold out at a pace exceeding expectations last year.
■ What is the radiative cooling material 'Radi-Cool'?
The radiative cooling material 'Radi-Cool' is a technology that efficiently radiates received heat outwards without using any energy. By combining high solar reflection performance and heat dissipation characteristics, it intensively radiates heat to the 'atmospheric window' (8-13 μm band), suppressing heat accumulation on the product surface even during the day.
Centered on the innovative environmental technology of 'cooling with zero energy,' our company will develop multifaceted heat countermeasures, from personal heatstroke prevention to corporate decarbonization and energy-saving solutions. (*As a radiative cooling technology that cools objects without energy consumption under direct sunlight)
■ Lifestyle Field: Application of technology to parasols
Unlike ordinary parasols that 'block sunlight (thermal insulation),' the 'Radi-Cool T Series' adopted for Moonbat's 'REIKYAKU Parasol' also has the function of 'releasing heat (radiative cooling).' As a result, the surface of the umbrella is less likely to retain heat even under the blazing sun, realizing a 'portable shade' that dramatically lowers people's sensible temperature.
■ Lineup
Folding umbrella 50cm (lightweight specification): ¥6,600 (tax included)
Folding umbrella 54cm (wind-resistant specification): ¥7,700 (tax included)
Folding umbrella 60cm (wind-resistant specification): ¥8,250
Folding umbrella 50cm (lightweight) / Folding umbrella 54cm (wind-resistant) / Folding umbrella 60cm (wind-resistant)
[The Expanding Potential of Radi-Cool: Heat countermeasures with paints and films]
Radi-Cool's radiative cooling has been commercialized not only in fabrics but also as films and paints, providing optimal 'cooling' solutions according to the usage environment and target objects.
We have a proven track record in various fields, including general buildings, outdoor equipment, commercial facilities, factories, warehouses, and even transportation infrastructure.
Most recently, in a demonstration experiment with Fukuoka City, we announced results that substantiate its remarkable cooling effect and contribution to reducing environmental loads.
(Verification results are here)
Appearance after painting the Hakata Port Bayside Museum
Air conditioning power consumption: Maximum 31.7% reduction (Average 18.1% reduction) / Roof surface temperature: Maximum 34.3℃ reduction / Attic temperature: Maximum 9.7℃ reduction
■ From 'Cooling' to 'Energy Saving Solutions'
Because Radi-Cool continues to release heat at night using the 'atmospheric window,' buildings can start the next morning in a cooled state (pre-cooled state), significantly reducing the start-up load of air conditioners. This achieves both cost reduction and decarbonization (Scope 2 reduction). From improving the working environment, such as preventing heatstroke, to acting as a specific 'energy-saving solution' that supports companies in realizing carbon neutrality, we will accelerate further expansion in the future.
■ Company Profile
Radi-Cool Japan Co., Ltd.
Representative: Jun He, President and CEO
Location: Nano Park, 5F Kisuke Nihonbashi Muromachi Bldg., 4-4-3 Nihonbashi Muromachi, Chuo-ku, Tokyo
Industry: Development, manufacturing, and sales of Radi-Cool radiative cooling materials
Capital: 100 million yen
URL: https://www.radi-cool.jp/
Online Shop: https://radi-cool.shop/
*Radi-Cool Japan Co., Ltd. is an affiliated company of Taiga Jitsugyo Co., Ltd.