What is the cooling performance of the BE-CooL cooler backpack?

Third-party testing has verified that it can maintain a temperature difference from the outside air for 9 hours in an environment of 35°C ± 2°C. After 9 hours, the temperature inside the bag remained at 23.4°C.

How much can the bag's capacity be adjusted?

It features a roll-top design that can be adjusted continuously from 13.5L to a maximum of 22L depending on the amount of contents.

What kind of insulation structure does it have?

The back panel has up to 7 layers of insulation, including a water-repellent outer fabric, polyurethane foam insulation, polyethylene foam sheet, EVA resin lining, and polypropylene non-woven fabric.

Where can I purchase it?

Pre-sales have started on the crowdfunding platform 'Makuake'.

Is it rain-resistant?

The outer fabric is made of PU-coated polyester that has been tested for water-repellency according to JIS L 1092, making it resistant to sudden rain and external moisture.

Why did an expert in cooler bags create a backpack? German-born 'BE-CooL Cooler Backpack' with 26 years of insulation technology launches on Makuake

Published May 26, 2026 7:00 PM ・ Updated Jun 14, 2026 4:45 PM ・ 3 min read ・ Source: PR TIMES

Contractor ejp has launched the German-made 'BE-CooL' cooler backpack on Makuake. It features 26 years of insulation expertise to protect precision electronics like laptops, with an adjustable capacity design.

Press Release: BE-CooL Cooler Backpack

ejp LLC (located at 6F, West Shinjuku Mizuma Building, 3-3-13 Nishi-Shinjuku, Shinjuku-ku, Tokyo; Representative: Hidekazu Enomoto) began accepting pre-orders for the 'BE-CooL Cooler Backpack' from German company WUNASIA via the crowdfunding platform 'Makuake' on May 26, 2026, at 10:00 AM.

Early-bird supporters can receive the product at a special price of up to 30% off.

### Background: Applying 26 years of insulation technology to a backpack

BE-CooL, created by German cooler bag specialist WUNASIA, condenses 26 years of 'insulation technology that blocks outside air' into a backpack. This multi-layer insulation structure, a testament to their expertise, was originally applied to protect laptops and tablets from summer heat damage, keeping the interior in optimal condition. From commutes and school runs to beaches and outdoor activities, the capacity can be freely adjusted from 13.5L up to 22L.

### Four Key Features of BE-CooL

- **Up to 7-layer Insulation Structure:** Adopted in the back panel, this structure maintains internal temperature against external heat for 9 hours under 35℃±2℃ conditions, proven by performance testing. - **Adjustable Roll-top Capacity:** The roll-top design allows for seamless capacity adjustment from 13.5L up to 22L. - **Comfortable to Wear:** Breathable mesh material and wide padded shoulder straps ensure comfort even during long-term use. - **Urban German Design:** Features a stylish form that blends into city life, making it suitable for daily use.

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Source: PR TIMES
Category: New Product

Why did an expert in cooler bags create a backpack? German-born 'BE-CooL Cooler Backpack' with 26 years of insulation technology launches on Makuake

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Press Release: BE-CooL Cooler Backpack

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