#Japan #Tokyo #Wearable Ice，SUNAYAMA，Cool Technology

New Heat Management Trend: 'Wearable Ice'

As we head into the scorching heat of summer, the Japan Meteorological Agency has now defined extreme heat days, termed 'Kokushobi', where temperatures soar above 40°C. This change reflects a new era in which summers in Japan are confronting increasingly severe heat waves.

In Tokyo, a record-breaking number of 29 days were classified as extreme heat days in 2025, a clear sign that rising temperatures are not just temporary anomalies but a persistent challenge in our daily lives.

The Rise of 'Wearable Ice'

In response to these rising temperatures, a novel cooling solution has emerged: 'Wearable Ice' — a neck-attached ice pad developed by SUNAYAMA. Recognizing the need for more effective cooling methods amid the heat, this innovative product focuses on the neck area, which is known for efficiently cooling the body's core due to the presence of major blood vessels.

Many cooling devices are currently available, including neck fans and cooling towels. However, the demand for a more intense and longer-lasting cooling effect has pushed for the development of 'Wearable Ice'. This product is not just a traditional ice pack. It has been designed to wrap snugly around the neck and shoulders, delivering immediate and effective cooling upon use.

Unique Features of 'Wearable Ice'

1. Powerful Cooling - The ice-filled design allows for significant cold exposure. Even when the ice melts, users can easily replenish it, ensuring a continuous cooling experience.

2. Comprehensive Coverage - Unlike standard neck rings that cool only around the neck, 'Wearable Ice' provides extensive cooling that wraps around the neck, shoulders, and the back of the head, efficiently combating heat in these prone areas.

3. Convenient and Reusable - 'Wearable Ice' is designed for repeated use by allowing users to swap out ice packs or cold packs. This means you can enjoy the benefits of this innovative cooling solution for extended periods, whether commuting, attending outdoor events, or working in high temperatures.

4. Compact Design - It can be easily folded and transported, making it an essential companion during outdoor activities like hiking or working.

Why We Need 'Wearable Ice' Now

As Japan’s summers reach pivotal milestones with the official recognition of extreme heat days, SUNAYAMA is offering a timely solution to help people beat the heat. The 'Wearable Ice' represents an evolution in thermal management from traditional ice packs, delivering not only potent cooling but also comfort, allowing individuals to reclaim their outdoor activities without being overwhelmed by the summer heat.

It's a shift from enduring the heat to enjoying summer to the fullest, rolling out innovative solutions like 'Wearable Ice' that provide both convenience and efficiency in everyday life.

Early Success in the Market

Following its launch in June 2026, 'Wearable Ice' quickly gained popularity, ranking first in the real-time rankings of Rakuten Marketplace in the Sports and Outdoors sector, specifically in the sports care product category. This immediate response from consumers underscores the significant value they place on effective heat management solutions.

Product Characteristics and Specs

• - Product Name: 'Wearable Ice' Neck Ice Pad
• - Release Date: June 2026
• - Price: ¥2,640 (tax included)
• - Color: Navy
• - Sales Locations: SUNAYAMA official online shop, Rakuten Marketplace, and Amazon official store
• - Dimensions: Approximately 8.5cm high x 80cm long
• - Material: 86% Nylon, 14% Polyurethane + TPU Coating

This product is not just a response to climate change but a robust solution enabling everyone to navigate extreme heat comfortably and efficiently. With the promise of 'Wearable Ice', enjoy the summer without apprehension of slowing down due to heat.