Hit Product on Makuake! Peltier-Based Cold Water Circulating Seat 'Shunkan Reiko' Returns with Encore Launch – Limited-Time 1,000 JPY OFF Coupon Available Until July 24 (Fri)!

Mitsukin Shoji Co., Ltd. (Headquarters: Oita City, Oita Prefecture), a company specializing in the planning and development of automotive accessories and practical gadgets, has launched a distribution campaign for a special 【1,000 JPY OFF coupon】 valid until Friday, July 24, 2026, for the encore project of its Peltier-based cold water circulating seat 'Shunkan Reiko (Encore)', which has received tremendous response on the crowdfunding platform 'Makuake (Makuake)'. This initiative expresses gratitude to supporters and offers an exceptional opportunity for those struggling with hot, sticky seats in cars or offices during the peak summer season to experience next-level comfort at a discounted price.

Makuake Project Link

Enthusiastic Response for Unprecedented Versatility: Beyond the Limits of Traditional Fan-Based Cooling Seats

The initial 'SPEEDER Shunkan Reiko Seat' project, launched on Makuake on June 5, 2026, under the concept of “bringing the coolness of a cold bath into your car,” immediately attracted massive traffic and achieved its funding goal in just three minutes—exceeding all expectations.

One major reason for this overwhelming response is the product’s revolutionary “ease of installation and high versatility” that overturns conventional wisdom. Thanks to its unique structure, it can be seamlessly installed even on 2-seater sports cars and tight-fitting full bucket seats—vehicles where traditional fan-based cooling seats were previously difficult or impossible to fit.

Moreover, the device can be powered not only via a cigarette lighter socket but also through portable power banks. This allows users to enjoy premium cooling not just inside vehicles, but also outdoors—perfect for camping, outdoor work breaks, or heatstroke prevention during summer field operations.

YouTubers Who Tested the Product Are Raving About It!

YouTubers who reviewed the product during the initial campaign expressed enthusiastic feedback after firsthand experience, with comments such as, “I want another one—I’d like to install this on every car in my household.”

Answer a Simple Survey to Receive a 1,000 JPY Discount Coupon for Makuake!

For this encore sale, to further support drivers working in harsh summer conditions and corporate clients, Mitsukin Shoji is offering a special discount coupon redeemable on Makuake to all who register as friends on the company’s official LINE account and complete a brief survey.

1,000 JPY OFF Coupon – Valid Until July 24 (Fri) This valuable coupon is applicable to all return tiers. It is currently being distributed to everyone who becomes a friend on our official LINE account and completes the survey.

Coupon Code Distribution: After registering as a friend, type “Makuake” in the chat window. Upon completing the displayed short survey, the coupon code will be issued.

How to Use the Coupon

- Register as a friend on our official LINE account via the link below → MTK Brand Official

- After registration, type “Makuake” (or “Makuake”) in the chat.

- Complete the survey that appears to receive your coupon code.

- Log in to Makuake

- Enter the coupon code on the following page to claim it: https://www.makuake.com/my/ticket/code/ For instructions on using code-based coupons, please refer to the help page: "How to Use Support Coupon Codes"

- During your pledge, select the claimed coupon to apply the discount.

※ Using code-based coupons requires a Makuake account and prior claiming of the coupon on your My Page.

※ Please note: Coupons cannot be applied after the pledge is completed.

Solving the Pain Points of Traditional Fan-Based Seats! Three Innovations Designed for Customer Satisfaction

We thoroughly analyzed the common shortcomings customers experienced with traditional fan-based cooling seats and pursued a truly comfortable user experience that only the 'Shunkan Reiko' cold water circulation system can deliver.

### 1. Goodbye to Lukewarm Air! Immediate, Real Cooling Even in Scorching Cars

Eliminates the common complaint with fan-based seats: “On hot days, the air feels warm and provides no real cooling.” Thanks to Peltier elements that chill water to very low temperatures, cold water continuously circulates within the seat, delivering instant, direct cooling upon contact. Even in a car parked under the blazing summer sun, your back and buttocks are quickly and effectively cooled.

### 2. No Wind, No Stress! A Next-Level, Wind-Free Comfort Zone

Eliminates all the typical discomforts of fan-based seats—such as “body getting too cold from constant airflow,” “dry eyes,” or “clothes flapping and causing distraction.” The 'Shunkan Reiko' cools by lowering the surface temperature of the seat without blowing air, preventing overcooling and dryness while smartly eliminating the sticky feeling of sweaty skin or clothes clinging to the seat.

### 3. Zero Fan Noise! Surprisingly Quiet Operation, Free from Annoying 'Buzzing' Sounds

Solves noise-related issues like “the fan is too loud, making it hard to hear music or conversations” or “I can’t use it in quiet offices due to noise concerns.” Since it uses a cold water circulation system without large fans, the operating noise is remarkably quiet. Enjoy cool comfort anytime, anywhere—without disturbing your drive, work focus, or peace.

Limited Quantity Encore Sale – Arrives Before Peak Summer!

To ensure delivery before the height of summer, this release is offered in limited quantities on a first-come, first-served basis, with constrained production capacity. The previous launch sold out almost immediately—so early consideration is highly recommended.

Project Overview

- Project Name: Encore Launch of 'SPEEDER Shunkan Reiko Seat' - Flagship Product: Peltier-Based Cold Water Circulating Seat 'Shunkan Reiko' - Project Launch Date: July 10, 2026 (Fri), 7:00 AM JST

This summer is expected to bring another severe heatwave. Experience unprecedented comfort and transform your summer drives with the 'SPEEDER Shunkan Reiko Seat'—reset your in-car stress today.

Makuake Project Page

Company Overview

- Company Name: Mitsukin Shoji Co., Ltd. (MITSUKIN SHOJI Co., Ltd.) - Founded: April 2011 - Representative: Shinichi Tanaka - Headquarters: 3-1-35 Shokumachi, Oita City, Oita Prefecture, Japan - Website: https://mitsukin.info/