Servo Launches 'Hyoten Cool Vest' for Cooling Without Fans, Offering Up to 6 Hours of Cooling

Servo Corporation, a uniform manufacturer and group company of MN Inter-Fashion Ltd. (Head Office: Minato-ku, Tokyo; President and CEO: Isshin Yoshimoto), has launched the 'Hyoten (Ice Wrap) Cool Vest,' an item that allows for easy body cooling, in response to recent temperature rises and increasingly harsh summer environments. The company is headquartered in Chuo-ku, Tokyo, and its Representative Director is Fumihiro Ueda.

The 'Hyoten Cool Vest' features a simple structure that efficiently cools the body even in environments where cooling fans cannot be used. By placing ice packs in the pockets on the back and waist, users can maintain a comfortable state for up to approximately 6 hours*1 even in hot conditions.

Furthermore, the dedicated ice packs have a 2WAY specification with different temperatures on the front and back. The surface is approximately 0°C and the back is approximately 5°C, allowing for use according to the application, and they can be cooled in a household freezer*2.

*1: Powerful Cooling: Approx. 2.5 hours (0-10°C), Stable Cooling: Approx. 3.5 hours (10-20°C)

*2: Freezer temperature guideline = -17°C or below

Additionally, it uses highly breathable mesh material, allowing users to fully experience the cooling effect while suppressing stuffiness. The front buckle makes it easy to put on and take off, and the size can be smoothly adjusted to fit the wearer's body, making it suitable for a wide range of work environments for both men and women.

This product, which cools the body simply and reliably without relying on air conditioning equipment, is expected to be utilized for heatstroke prevention in various scenes, including construction, logistics, and manufacturing industries, as well as outdoor event management, light work, and leisure activities such as outdoor excursions and sports viewing.

■ Product Overview

★ Sustained Cooling with Ice Packs (Up to Approx. 6 Hours)

★ High Breathability Mesh Reduces Stuffiness

★ Thin Design Can Be Worn as Innerwear Under Work Clothes

★ Comes with an Anti-Condensation Pouch.

◇ Hyoten Cool Vest

Product Number: CV2026

Colors: Black, Ice Blue, Light Gray

Price: 2,310 yen (tax included) *Official online store price

How to Use: Insert the dedicated ice pack 'Hyoten ZERO' (sold separately) into the pockets.

◇ Special Low-Temperature Ice Pack [Hyoten ZERO]

Product Number: IP5001

Color: Silver

Price: 3,410 yen (tax included) *Official online store price

Duration of Effect: Under conditions of 33-35°C and 45-65% humidity, it provides approximately 2.5 hours of powerful cooling (approx. 0-10°C) and approximately 3.5 hours of stable cooling (approx. 10-20°C), for a total cooling effect of about 6 hours. Can be cooled in a household freezer (internal temperature guideline: -17°C or below).

Sales will begin on the official online store from June 5, 2026.

■ Product Details & Purchase Page

・Hyoten Cool Vest (Ice Blue) https://www.style-ist.jp/item/CV2026_K1.html

・Special Low-Temperature Ice Pack [Hyoten ZERO] https://www.style-ist.jp/item/IP5001.html

Servo will continue to contribute to the safety and comfort of people working in diverse fields through the development of products that adapt to environmental changes.

■ Contact for Inquiries Regarding This Press Release

Servo Corporation, Business Development Department

Email: info@style-ist.jp

Phone: 03-6861-8425

Reception Hours: Weekdays 9:30 AM - 5:00 PM

■ Company Overview

Servo Corporation

Company Name: Servo Corporation

Location: Fujister Building Nihonbashi 8F, 11-8 Nihonbashi Odenmacho, Chuo-ku, Tokyo

Established: 1961

Representative: Fumihiro Ueda, President and Representative Director

Business Activities: Planning, production, and management of uniforms

URL: https://www.servo-uni.com/

Official Online Store: https://www.style-ist.jp/

MN Inter-Fashion Ltd.

Our company inherits the textile business of Nittetsu Bussan and the network of Mitsui & Co. I-Fashion, and operates in a wide range of fields.

Company Name: MN Inter-Fashion Ltd.

President and CEO: Isshin Yoshimoto

Head Office: Akasaka K Tower, 1-2-7 Motakasaka, Minato-ku, Tokyo

Business Activities: Functional materials, functional textiles, industrial materials, apparel and accessories, brand marketing, etc.

URL: https://mn-interfashion.com

Details about the brands will be released sequentially on the official website and the SNS accounts of 'LaunchPark,' our information dissemination platform for proprietary material brands.

LaunchPark: https://launch-park.com/

Instagram: https://www.instagram.com/launchpark_mag/