Stay Cool Lighter: Kishiriminto Series' 'Full-Finger Arm Cover' Earns A-Rating in LDK

In the UV protection item special feature of LDK's June issue, the 'Full-Finger Arm Cover' from the Kishiriminto series has received an A-rating.

With extreme heat becoming the new normal, combining heat protection and UV protection during summer outings has become essential. However, many people feel burdened by the increasing load of carrying cooling gadgets and mobile devices.

The Kishiriminto series is a cooling UV care line that protects skin from heat and UV rays simply by wearing it. Featuring sustained cooling technology that activates upon contact with sweat or humidity, it enhances comfort during summer outings.

The Heavier the Heat, the Heavier the Load

In April 2026, the Japan Meteorological Agency introduced the new forecast term 'Severe Heat Day' to indicate days with maximum temperatures exceeding 40°C.

To cope with increasingly harsh summers, the market for cooling products such as handheld fans, air-conditioned clothing, and ice packs continues to grow.

However, concerns have also been raised, such as:

Worry about battery drain during long outings

Increased load when carrying power banks

Desire to stay as light and mobile as possible

SUNAYAMA's solution? The Kishiriminto series, which gets cooler the more you sweat.

Since it provides both heat and UV protection just by wearing it, it can be seamlessly integrated into daily life without adding extra items.

Heat protection and UV protection — all in one piece

The Kishiriminto arm cover offers a balanced set of features essential for a comfortable summer.

Its greatest feature is the sustained cooling effect achieved through mint and xylitol processing. By reacting to sweat and humidity, it delivers a refreshing sensation unlike typical contact-cooling fabrics. It ensures comfortable wear during various summer activities such as outdoor commuting, leisure, and walking.

Moreover, it achieves high UV protection — approximately 99% for black and 97% for greige — while maintaining a soft touch and comfortable fit. Designed for daily use, it minimizes stress even during prolonged wear.

Sustained Cooling via Mint and Xylitol Processing

The Kishiriminto series uses cooling technology that leverages the refreshing coolness of mint and xylitol's heat-absorbing reaction. By absorbing heat during moisture absorption, it provides a consistently cool wearing experience.

High UV Protection to Shield Skin from Sun Damage

The arm cover also prioritizes UV protection, essential for summer. It offers reliable UV protection, allowing users to wear it with confidence even during strong sunlight.

Our Commitment to 'Daily Comfort'

Arm covers are worn for extended periods in everyday scenarios such as commuting, shopping, and walking.

That's why we've focused not only on cooling performance but also on UV protection, texture, and fit.

Motivated by this award, we will continue developing products that comfortably accompany our customers every day.

Kishiriminto Series

The Kishiriminto series — cooling intensifies as you sweat.

We offer six types of items tailored to areas affected by UV exposure and heat.

Extended length ensures coverage — even the back of the hand, often missed when applying sunscreen, is protected

Fingertips, which surprisingly show signs of aging, are fully covered — also protects the neck and décolletage, where sunscreen tends to wear off

Open palms allow easy operation of wristwatches — ideal when sweat marks or chafing are a concern

Product Name: Kishiriminto Series

Price: From 2,750 yen (tax included)

Colors: Black / Greige

UV Protection Factor: UPF50+ (Black, Greige)

UV Blocking Rate: Approximately 99% for Black, 97% for Greige

Sales Channels:

Rakuten Official Store: https://x.gd/20QlE

Amazon Official Store: https://x.gd/Ypnnw

Official Website: https://x.gd/66cJG

About SUNAYAMA

Founded 63 years ago, SUNAYAMA began as a sock manufacturer. But what we aim to create is not just products. We listen to customers' unspoken small concerns, daily discomforts, and aspirations for an ideal life. From the perspectives of 'posture, quality sleep, and body warmth,' we strive to deliver new value.

Company Name: SUNAYAMA Co., Ltd.

Head Office: 6-27-5 Okudo, Katsushika-ku, Tokyo 124-0022

Established: June 17, 1963

Capital: 40 million yen

Representative: Naoki Sunayama, President & CEO

Website: http://www.sunayama.jp/