How does the Hinayari Suiryu Kaimin Mat Lite cool the body?

It circulates water cooled by a fan in the chiller unit through the mat to lower body temperature.

How often should the water be changed?

With daily use, change the 1.7L water daily to maintain hygiene.

Can I place it directly on a futon?

Yes, place it directly on a bed or futon. Cover with a sheet for comfort.

How do I use the cooling fan mode?

Attach the included accessory and turn it on to use as a personal cooling fan.

What if the product malfunctions?

It comes with a 6-month warranty. Contact customer support for assistance.

Limited Quantity, Warehouse-Revival Special Price: Thanko Launches 'Hinayari Suiryu Kaimin Mat Lite' with Simple Button-Only Operation for Unbeatable Value

Published Jun 17, 2026 9:23 PM ・ Updated Jun 17, 2026 1:08 PM ・ 8 min read ・ Source: PR TIMES

Thanko Co., Ltd. has launched the 'Hinayari Suiryu Kaimin Mat Lite' on June 17, 2026. This water-cooling sleep mat delivers sustained coolness by continuously circulating cold water inside the mat, eliminating the need for a remote control and offering simple button-only operation. Priced at ¥12,800 (tax included), it achieves outstanding cost performance while consuming only about 6W of power, making it ideal for energy-saving comfort during hot summer nights.

Thanko Co., Ltd. (headquartered in Chiyoda-ku, Tokyo; CEO: Taichi Arai) has launched the 'Hinayari Suiryu Kaimin Mat Lite' on June 17, 2026.

The product will be available in limited quantities through Thanko's official online store and various e-commerce sites.

Learn more

This product is a water-cooling sleep mat that continuously circulates cold water within the mat to draw body heat away, providing sustained coolness even on sweltering nights.

Place the water-flowing mat (700x1600mm) on a bed or futon, and connect it to the chiller unit (155×155×265mm) that circulates and cools the water.

Fill the chiller unit with water and plug it in, and water will begin circulating through the mat.

Unlike traditional cooling mats that tend to warm up from body heat, this product continuously cools the water using the unit's built-in fan, maintaining a refreshing cool sensation.

Power consumption is only about 6W, making it highly energy-efficient. Even with the air conditioner set slightly higher, the mat cools the body directly, ensuring comfortable sleep even on tropical nights.

Additionally, it features an off-timer function (1–12 hours) to prevent unnecessary power usage.

Recommended for those who want to overcome uncomfortable nights, sleep soundly, and stay cool while saving energy.

● Achieving both cool comfort and unbeatable value with 'simple operation'—no remote control

This product is part of the 'Warehouse Revival Project,' which revives unopened inventory from the popular water-flow mat series, available exclusively through official online channels.

Responding to rising electricity costs and growing demand for energy-saving solutions, the company intentionally removed the remote control and optimized the design for intuitive 'button-only operation' on the main unit, making the water-cooling experience accessible to more people.

Furthermore, by adopting a focused '6-month warranty' to support just one summer season, the company has eliminated all unnecessary costs.

By streamlining the design to its essentials, the product achieves an outstanding cost-performance ratio, priced at ¥12,800 (tax included)—one of the best in the series. It is being released as a practical, budget-friendly model to comfortably support households during hot summer nights without straining household budgets.

Cooling mat with continuous water flow

Water circulates through the mat when water is added to the chiller and powered on

Water in the mat is cooled by the chiller’s filter and fan

3-level airflow adjustment

Off-timer up to 12 hours

Can also be used as a personal cooling fan

USB-powered for use during car camping or outdoor camping

Energy-efficient at only 6W, allowing worry-free use

・Dimensions / Unit: 155W × 155D × 265H (mm),

Mat: 700W × 1600L (mm), Water circulation hose: 1.2m

・Weight / Unit: approx. 1.0kg, Mat: approx. 900g

・Power supply / USB 5V 1.2A or higher

・Power consumption / USB: 6W

・Modes / 3 levels (High, Medium, Low)

・Timer settings / 1–12 hours

・Usable water temperature / Up to 40°C

・Cable length / Approx. 1m

・Water tank capacity / Approx. 1.7L

・Materials / Unit: ABS, Mat: PVC

・Set contents / Main unit, mat, water circulation tube, USB cable, water circulation filter,

Cooling fan attachment, water drainage pump, Japanese instruction manual

・Warranty period / 6 months from date of purchase

・Release date / 2026/06/17

・Model/JAN / WATL26SWH / 4580060606405

Hinayari Suiryu Kaimin Mat Lite

[Selling Price] ¥12,800 (tax included)

https://www.thanko.jp/view/item/000000004841

Hinayari Suiryu Kaimin Mat

Sleep mat with continuous internal water flow for all-night cool comfort

¥19,800

https://www.thanko.jp/view/item/000000004842

Product inquiries

Thanko Co., Ltd. Online Sales Department

4F NREG Akihabara Building, 1-8-13 Sotokanda, Chiyoda-ku, Tokyo 101-0023

TEL 03-3526-4326　FAX 03-3526-4322

Email [email protected]　URL: https://www.thanko.jp

FACT BOX

Source: PR TIMES
Category: New Product
Dates in source: 2026/06/17