New Cooling Vest with Ice Packs 'ZAMST Ice Vest' Launched June 8 for Use During Sports and Spectating in Hot Environments

Nippon Sigmax Co., Ltd. (Head office: Shinjuku-ku, Tokyo; President & Representative Director: Yosuke Suzuki), which operates the sports support and care product brand "ZAMST", will launch the "ZAMST Ice Vest" on Monday, June 8, a battery-free cooling vest that maintains a cooling sensation through a multi-structure insulation sheet covering the cooling packs.

▲ Newly launched "ZAMST Ice Vest"

■ Background of the ZAMST Ice Vest launch

In recent years, due to record-breaking heat waves, the importance of heat countermeasures in summer sports activities has been increasing year by year. Especially in outdoor sports, declines in performance due to rising body temperature and health risks have become issues, and there is a need to create an environment for safe sports participation.

The effects of heat extend not only to athletes and enthusiasts but also to spectators spending long hours outdoors, becoming one of the factors that discourage playing or watching sports.
Therefore, heat countermeasures are not just about improving comfort but are a crucial element for all people involved in sports to engage in activities with peace of mind.

Against this backdrop, heat countermeasure items are required to be usable during activity and to provide stable, sustained cooling effects.

Products that require a power source have limitations on usage environments, as well as issues related to operating time and charging, making them not necessarily easy to use in all situations.

Moreover, conventional cooling methods using ice packs also had challenges such as the cooling effect diminishing in a short time, making it difficult to maintain stable cooling during activity.

ZAMST has previously introduced various heat countermeasure items, but the means to actively lower body heat in hot environments while maintaining stable cooling during activity were limited.

Therefore, the company is launching the "ZAMST Ice Vest" as a new heat countermeasure item that does not require a power source and provides a stable cooling effect for approximately 4 hours even in hot environments.

■ Product Features

Feature 1: Ice packs placed at 4 locations: 2 on the back and 2 on the sides (underarms)

By cooling the back, where heat tends to accumulate, and the underarms, where large blood vessels pass, the vest efficiently absorbs body heat.

Furthermore, the multi-layer insulation sheet covering the ice packs maintains a temperature of 4°C to 10°C (cooling surface of the ice pack) for 4 hours in an environment of 40°C.

*Ice packs are included.

Feature 2: Excellent stretch and fit, designed not to hinder movement during sports

By using power mesh fabric, the product is thin, achieving both comfortable wearing and fit.

It is designed not to interfere with movements during competition, such as rotating the arms or twisting the body.

Feature 3: Belt with buckle

Equipped with an adjustable buckle for a preferred fit, and can be put on and taken off with one touch.

■ ZAMST Ice Vest Product Information

Official website product page URL

https://www.zamst-online.jp/SHOP/388512.html

Release date

Monday, June 8, 2026

*This product will be sold only at the ZAMST official online shop.

Suggested retail price

5,400 yen (excluding tax)

Size (applicable range: chest circumference)

M-L (84 to 102 cm)
*This product is available in one size only.

Quantity per box

1 vest

■ About ZAMST (https://www.zamst-online.jp/)

ZAMST is a sports support and care product brand established in 1993 by Nippon Sigmax Co., Ltd., a medical device manufacturer that develops and manufactures orthopedic products.

Since its inception, based on knowledge and technology cultivated in the medical field, it has supported athletes who constantly face the risk of injury.

Building on 30 years of experience and efforts, the brand will continue to challenge itself to help all athletes maximize their performance.

ZAMST Brand History

■ ZAMST Partners (https://www.zamst-online.jp/brand/partner/)

ZAMST supports athletes and organizations that continue to push limits in all sports, including volleyball, basketball, soccer, tennis, marathon, golf, badminton, and more.

Volleyball: Yuji Nishida, Ran Takahashi, Taishi Onodera, Tomohiro Yamamoto, Chihiro Sasaki, Airi Miyabe

Basketball: Yuki Togashi, Yuki Kawamura, Yudai Nishida, Kyosuke Terashima, Taiga Okada, Trae Young

Soccer: Ryo Miyachi, Shinnosuke Hatanaka, Shota Suzuki, Sota Nakamura, Yusuke Kobayashi, Fumiya Unoki, Ryo Sato, Junnosuke Suzuki

Tennis: Yoshihito Nishioka, Nao Hibino, Yosuke Watanuki / Marathon: Reia Iwade / Ski Jump: Noriaki Kasai

Golf: Uta Ano, Amiyu Ozeki, Reika Miyata / Badminton: Misaki Matsutomo / Baseball: Shogo Akiyama, Go Matsumoto, Yuki Kishida / Fencing: Rio Azuma, Seira Azuma

And many other athletes and teams

■ About Nippon Sigmax Co., Ltd. (https://www.sigmax.co.jp/)

Location: 1-24-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo

Founded: June 1, 1973

Capital: 90 million yen

President & Representative Director: Yosuke Suzuki

Number of employees: 246 (as of end of March 2025)

Sales: 14.37 billion yen (fiscal year ended March 2025)

Nippon Sigmax operates in the "physical activity support business" domain, providing products and services related to the human body across a wide range of fields. Since its founding, it has specialized in the "orthopedic field" within "medical care," offering characteristic products such as various joint orthoses, external fixation materials like casts, rehabilitation products, icing systems for cooling therapy, and medical devices for treatment and diagnosis. In the "sports field," it has received high acclaim both domestically and internationally centered on the sports care and support brand "ZAMST." Additionally, it is expanding its "MEDIAID" brand products in areas such as "daily care" supporting everyday life and "worker's care" supporting workers' bodies.

*Physical activity support business: A business (a term coined by the company) that supports people to live healthier and more comfortable lives by providing products and services aimed at preventing, diagnosing, treating, and recovering from musculoskeletal disorders, as well as maintaining and improving motor functions.