2025.06.17

Shock of up to -15°C! Beat the Japanese Summer Heat with the Ultra-Cooling "COVEROSS®" T-Shirt

#COVEROSS

#T-shirt

#White Tee

#Technical Fabric

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In recent years, Japanese summers have grown dangerously hot, demanding ever more attention.

Many apparel brands have released cool-feeling T-shirts that emphasize breathability. But among them, the COVEROSS® "Ultra Freezer T-shirt" stands out for its next-level cooling performance.

Amazingly, the unique fabric and processing technology deliver a "cooling sensation" of up to -15°C.

This ultra-cooling Tee set record sales for T-shirts on Makuake in 2023, taking the fashion industry by storm. How was this innovative T-shirt born?

Moto Suzuki of Hap Inc. shares the full story—from development secrets to the logic behind the features.

PROFILE

Moto Suzuki

hap Inc., CEO

After gaining experience in textile trading, both in Japan and abroad, he founded Hap Inc. in 2006 and developed COVEROSS® in 2016. In 2023, he was honored with the Prime Minister’s Award, receiving recognition at the international level.

The Goal: A T-shirt that Conquers Japan’s Extremely Hot Summers

The Ultra Freezer T-shirt was born to tackle the challenge of Japan’s extreme summer heat.

"With the heatwaves growing harsher every year, our customers told us, 'Regular cool-touch T-shirts just aren’t enough' and 'We want T-shirts that feel even cooler.'

What people need today is a T-shirt that 'instantly feels refreshing the moment you put it on—and stays comfortable even when you sweat.' So, we assembled a dedicated development team to answer those demands."

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