With Over 260,000 Units Sold, Portable Ice Bag Bottle Featuring Up to 40 Hours Cooling Launches in New Colors and 3 Sizes
Yuryo Kokusai Co., Ltd. has released the latest model of the 'FRESH SWITCH Portable Ice Bag Bottle', boasting up to 40 hours of cooling power. With a track record of 260,000 units sold, the new lineup adds 3 sizes (S, M, L) and 6 designs including flower and check patterns. The 2-way specification functioning as both an ice bag and a thermos supports heatstroke countermeasures in extreme heat.
📋 Article Processing Timeline
- 📰 Published: May 18, 2026 at 19:00
- 🔍 Collected: May 18, 2026 at 10:31
- 🤖 AI Analyzed: May 18, 2026 at 21:47 (11h 16m after Collected)
Yuryo Kokusai Co., Ltd. (Headquarters: Fukuoka Prefecture) has further updated its 'FRESH SWITCH Portable Ice Bag Bottle' this summer, which has surpassed a cumulative shipment of 260,000 units (*1) and become a staple for heatstroke prevention.
Leveraging its registered utility model's unique design boasting up to 40 hours of cooling power, the company has added an 'S, M, L' 3-size lineup to suit all scenes, along with new designs that blend into adult daily life. As the latest model combining functionality and style to survive the harsh summer heat, sales commenced in May 2026.
*1 Cumulative shipment record from May 2025 to May 2026 (in-house research)
Official online shop is here
■ Development Background: Solving the 'Melting and Wet' Ice Bag Dissatisfaction with Vacuum Insulation Technology
In recent years, record highs exceeding 40°C have occurred frequently, and in 2026, the Japan Meteorological Agency formally defined days with a maximum temperature of 40°C or higher as 'extreme heat days'. (*2) To survive this harsh summer, FRESH SWITCH solved the 'quick melting' issue of traditional ice bags using the vacuum insulation technology of thermos flasks.
While surpassing 260,000 units, the company shaped customer feedback requesting 'sizes easy for kids to hold' and 'designs blending with fashion', evolving it this summer into a 'new standard for heatstroke prevention' combining functionality and style.
*2 Source: Japan Meteorological Agency 'Decision on Name for Days with Maximum Temperatures of 40°C or Higher as "Extreme Heat Days"' (Announced April 17, 2026)
Safe for children to use.
5 Key Points of the Product
■ POINT 1: Applying Thermos Technology. 'Vacuum Insulation Structure' Keeps Cold Even if Ice Melts
Adopting the same stainless steel vacuum insulation structure as a thermos, it strongly blocks the influence of outside temperatures. It keeps 0°C conditions for about 15 hours and maintains a cool sensation for up to 40 hours. (*3) Comfortable coldness persists for a long time even in severe heat.
*3 June 2025 (in-house research)
'Vacuum Insulation Structure' supporting up to 40 hours of coldness
■ POINT 2: Cooling and Hydration in One. 'Ice Bag x Thermos' 2-WAY Specification
Two separate uses are possible depending on the purpose.
As an ice bag: By putting a beverage in the included silicone bar and freezing it, you can cool your body and, after it melts, hydrate directly.
As a thermos: By putting cold beverages directly into the stainless steel bottle, it quickly transforms into a cold-retention thermos keeping cold for a long time.
*To prevent bottle deformation or damage, please only put the 'silicone ice bag' in the freezer.
Use as an ice bag. Also usable as a thermos.
■ POINT 3: Total of 6 Trendy 'Flower & Check Patterns' Newly Introduced!
Flower Pattern: 3D beauty with embossed processing where light dances
Surface of the flower pattern
A calm matte texture is adopted for the main body. The fine embossing on the surface creates a premium feel as the expression changes with movement under the sun.
Flower Pink Flower Blue Flower White
Check Pattern: Elegant gloss, worn lightly
Surface of the check pattern
Finished with vibrant UV printing and an elegant gloss. With a 'high-value look' that is not too casual, it blends naturally with any fashion.
Check Blue Check Pink Check Brown
■ POINT 4: Evolving to an 'S, M, L' 3-Size Lineup Usable by the Whole Family!
From left: Size S, Size M, Size L.
Responding to customer voices such as 'I want something easy for small children's hands to hold' and 'I want a large capacity to withstand the blazing sun during club activities', 3 sizes (S, M, L) are available to choose according to the purpose.
*Available sizes vary by design.
*Please check the official online shop for lineup and size details.
Size
Recommended Scene
Available Colors
S
For kids and portability
Gloss (4 colors)
Gradient (2 colors)
M
All colors available! The definitive choice for daily use
New colors (6 colors total)
Gloss (4 colors)
Gradient (2 colors)
Matte (3 colors)
L
For club activities and long-time cooling
Matte (3 colors)
■ POINT 5: Reassuring 'Utility Model Registered'
It has acquired a utility model (No. 3251656) for a unique structure that integrates the ice bag and vacuum insulation case with a special lid.
- 'Sealed Fixing Structure' that doesn't let cold air escape: Eliminates gaps to achieve astonishing cold retention times.
- 'Tough Strap' for active movement: The connecting part
Leveraging its registered utility model's unique design boasting up to 40 hours of cooling power, the company has added an 'S, M, L' 3-size lineup to suit all scenes, along with new designs that blend into adult daily life. As the latest model combining functionality and style to survive the harsh summer heat, sales commenced in May 2026.
*1 Cumulative shipment record from May 2025 to May 2026 (in-house research)
Official online shop is here
■ Development Background: Solving the 'Melting and Wet' Ice Bag Dissatisfaction with Vacuum Insulation Technology
In recent years, record highs exceeding 40°C have occurred frequently, and in 2026, the Japan Meteorological Agency formally defined days with a maximum temperature of 40°C or higher as 'extreme heat days'. (*2) To survive this harsh summer, FRESH SWITCH solved the 'quick melting' issue of traditional ice bags using the vacuum insulation technology of thermos flasks.
While surpassing 260,000 units, the company shaped customer feedback requesting 'sizes easy for kids to hold' and 'designs blending with fashion', evolving it this summer into a 'new standard for heatstroke prevention' combining functionality and style.
*2 Source: Japan Meteorological Agency 'Decision on Name for Days with Maximum Temperatures of 40°C or Higher as "Extreme Heat Days"' (Announced April 17, 2026)
Safe for children to use.
5 Key Points of the Product
■ POINT 1: Applying Thermos Technology. 'Vacuum Insulation Structure' Keeps Cold Even if Ice Melts
Adopting the same stainless steel vacuum insulation structure as a thermos, it strongly blocks the influence of outside temperatures. It keeps 0°C conditions for about 15 hours and maintains a cool sensation for up to 40 hours. (*3) Comfortable coldness persists for a long time even in severe heat.
*3 June 2025 (in-house research)
'Vacuum Insulation Structure' supporting up to 40 hours of coldness
■ POINT 2: Cooling and Hydration in One. 'Ice Bag x Thermos' 2-WAY Specification
Two separate uses are possible depending on the purpose.
As an ice bag: By putting a beverage in the included silicone bar and freezing it, you can cool your body and, after it melts, hydrate directly.
As a thermos: By putting cold beverages directly into the stainless steel bottle, it quickly transforms into a cold-retention thermos keeping cold for a long time.
*To prevent bottle deformation or damage, please only put the 'silicone ice bag' in the freezer.
Use as an ice bag. Also usable as a thermos.
■ POINT 3: Total of 6 Trendy 'Flower & Check Patterns' Newly Introduced!
Flower Pattern: 3D beauty with embossed processing where light dances
Surface of the flower pattern
A calm matte texture is adopted for the main body. The fine embossing on the surface creates a premium feel as the expression changes with movement under the sun.
Flower Pink Flower Blue Flower White
Check Pattern: Elegant gloss, worn lightly
Surface of the check pattern
Finished with vibrant UV printing and an elegant gloss. With a 'high-value look' that is not too casual, it blends naturally with any fashion.
Check Blue Check Pink Check Brown
■ POINT 4: Evolving to an 'S, M, L' 3-Size Lineup Usable by the Whole Family!
From left: Size S, Size M, Size L.
Responding to customer voices such as 'I want something easy for small children's hands to hold' and 'I want a large capacity to withstand the blazing sun during club activities', 3 sizes (S, M, L) are available to choose according to the purpose.
*Available sizes vary by design.
*Please check the official online shop for lineup and size details.
Size
Recommended Scene
Available Colors
S
For kids and portability
Gloss (4 colors)
Gradient (2 colors)
M
All colors available! The definitive choice for daily use
New colors (6 colors total)
Gloss (4 colors)
Gradient (2 colors)
Matte (3 colors)
L
For club activities and long-time cooling
Matte (3 colors)
■ POINT 5: Reassuring 'Utility Model Registered'
It has acquired a utility model (No. 3251656) for a unique structure that integrates the ice bag and vacuum insulation case with a special lid.
- 'Sealed Fixing Structure' that doesn't let cold air escape: Eliminates gaps to achieve astonishing cold retention times.
- 'Tough Strap' for active movement: The connecting part
FAQ
How long does the FRESH SWITCH bottle stay cold?
Thanks to its vacuum insulation structure, it maintains coldness for up to 40 hours.
Can I put the whole bottle in the freezer?
No, only the included 'silicone ice bag' should be frozen. The stainless steel bottle should not be frozen to prevent damage.
What sizes are available?
It comes in 3 sizes: S for kids/portability, M for daily use, and L for long activities like sports.