What are the features of COOLCORE material?

It provides a natural cooling effect by quickly absorbing, spreading, and evaporating moisture. The cooling function is inherent in the fiber structure, so the effect lasts semi-permanently even after repeated washing.

When and where will COOLCORE products be released?

They will be released on May 23, 2026, at all HARUYAMA stores nationwide.

What are the main specifications and prices of the suit set?

The jacket is priced at 25,900 yen (excluding tax), and the pants are 11,000 yen (excluding tax). The colors available are black and navy, and the sizes are S, M, L, and LL.

What are the price and size options for the short-sleeve business polo shirt?

The price is 5,990 yen (excluding tax), and it is available in five sizes: S, M, L, LL, and 3L.

Who are COOLCORE products suitable for?

They are suitable for business professionals who want to maintain both functionality and a neat appearance as business attire, especially during the increasingly harsh summer heat in Japan.

Stay Cool Just by Wearing It: Patented Cooling Technology Transforms Business Wear for Extreme Heat! 'COOLCORE Setup and Short-Sleeve Business Polo Shirt' to be Released on May 23, 2026

Published May 22, 2026 9:52 PM ・ Updated Jun 14, 2026 4:51 PM ・ 5 min read ・ Source: PR TIMES

Haruyama Trading's 'TOKYO RUN' brand is launching business wear featuring the patented cooling technology 'COOLCORE®' at stores nationwide on May 23, 2026. The fiber structure ensures long-lasting cooling even after washing, combining comfort and professional style for business people facing intense summer heat.

Launch of 'COOLCORE®' Setup and Short-Sleeve Business Polo Shirt

Haruyama Trading Co., Ltd. (Headquarters: Okayama City, Okayama Prefecture; President: Masafumi Haruyama), a company that supports the health of business professionals, will launch 'COOLCORE®' setups and short-sleeve business polo shirts using patented cooling materials under its original brand 'TOKYO RUN' at all Haruyama stores nationwide starting Saturday, May 23, 2026.

As the Ministry of the Environment warns of 'life-threatening heat,' Japanese summers are becoming increasingly severe each year, making heatstroke prevention outdoors a major issue. Amidst this situation, demand is growing for business attire that compromises neither on functionality nor on aesthetic quality, and this product meets those expectations.

### Realizing 'Cool, Dry, Comfortable, and Long-lasting' through Fiber Power

The core of this product lies in the patented cooling fabric technology uniquely developed by COOLCORE®. It exhibits a natural cooling effect by quickly absorbing, dispersing, and evaporating moisture, effectively lowering the wearer's perceived temperature and overturning the conventional standards of business attire.

Furthermore, because the cooling effect is generated by the fiber structure itself rather than through chemical processing, the functionality is not compromised by repeated washing, ensuring comfort that lasts semi-permanently. While maintaining the professional 'formal' look required in business settings, the setup features a detailed dot-patterned fabric design that offers high breathability, keeping the wearer cool and dry even during long hours of wear. The short-sleeve business polo shirt offers a stylish design and a soft fabric feel, suitable for dressed-down professional ensembles.

### Product Overview

**【Product Name】 COOLCORE® Setup**

- **Price**: Jacket 25,900 yen (excluding tax), Pants 11,000 yen (excluding tax) - **Sizes**: S, M, L, LL - **Colors**: Black, Navy - **Materials**: 92% Polyester, 8% Polyurethane

**【Product Name】 COOLCORE® Short-Sleeve Business Polo Shirt**

- **Price**: 5,990 yen (excluding tax) - **Sizes**: S, M, L, LL, 3L - **Colors**: Black, Khaki, Navy - **Materials**: 100% Polyester

- **Release Date**: Saturday, May 23, 2026 - **Available at**: All Haruyama stores nationwide - **Inquiries**: Haruyama Customer Service Center 0120-923-924

*COOLCORE® is a registered trademark of COOLCORE LLC.

FACT BOX

Source: PR TIMES
Category: New Product
Organizations: COOLCORE LLC

Stay Cool Just by Wearing It: Patented Cooling Technology Transforms Business Wear for Extreme Heat! 'COOLCORE Setup and Short-Sleeve Business Polo Shirt' to be Released on May 23, 2026

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Launch of 'COOLCORE®' Setup and Short-Sleeve Business Polo Shirt

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