Certified and Patented: The Shokunin COOLWAVE Dual Cooling Water Cooling Vest Technical Guide

For procurement managers and safety officers evaluating industrial heat stress solutions, understanding a product's certification, patent protection, and technical specifications is essential before making a purchase decision. The Shokunin COOLWAVE dual cooling water cooling vest is an ice-water circulation system designed for workers in high-temperature environments such as construction sites, metal sheet factories, and outdoor operations. This technical guide details its certified credentials, patent status, core parameters, and real-world applications to support your evaluation process.

The Problem: Occupational Heat Stress in Industrial Settings

Workers exposed to extreme heat — whether from direct sunlight, metal roofs, or industrial processes — face risks of heat exhaustion, reduced productivity, and serious heatstroke. According to industry data, industrial applications (construction and manufacturing) accounted for 34.5% of the global cooling vest market in 2025 (Dataintelo). Conventional cooling solutions like ice packs or phase-change materials often require frequent replacement and cannot sustain cooling beyond a limited duration. A dual cooling water cooling vest that circulates ice water through a closed loop addresses this gap by delivering continuous, adjustable cooling without the need for constant ice changes.

Industry Background: The Growing Demand for Certified Cooling Vests

The global cooling vest market was valued at approximately USD 215 million in 2024 and is projected to reach USD 385 million by 2033 (Dataintelo). Asia Pacific is the fastest-growing region, driven by rapid industrialization and large outdoor work populations (Spherical Insights). As the market expands, buyers are increasingly seeking vests that meet recognized certification standards. General industry standards such as ISO 9001:2015 for quality management and CE or UL marks for electrical components are commonly referenced. The Shokunin COOLWAVE vest holds a specific patent and a disaster prevention certification that set it apart in the industrial segment.

Detailed Solution: Shokunin COOLWAVE Dual Cooling Water Cooling Vest

The Shokunin COOLWAVE is a water-circulation cooling vest manufactured by FENG SHANG PRECISION CO., LTD., a Taiwan-based company established in 2009 with a 1,000 m² factory and a team of 30 employees. The vest uses a battery-powered pump to circulate ice water from a backpack through tubes sewn into a vest worn under normal clothing. It is categorized as an active circulatory cooling device, which the industry recognizes as an increasingly deployed technology for occupational heat stress (Strategic Market Research).

Core Technical Specifications

• Cooling duration: 3–4 hours per set of ice packs (two provided)
• Weight: Within 2 kg (backpack and vest combined)
• Suitable ambient temperature: Below 10°C (cooling effect achieved when ice water circulates)
• Pump output: 5V, 150mA (max); powered by a standard USB power bank
• Flow rate: Maximum 320–370 ml/min
• Materials: Shoulder strap – 600D polyester; vest body – PEVA; water bag – TPU; water bag cap – polypropylene; cooling tube – sand rubber (black)
• Contents: Water-cooled vest backpack ×1, ice packs ×2
• Available colors: Black, Blue, Gray (Professional Model); Basic Model also available

Patented and Certified Design

The COOLWAVE water-circulation cooling vest (Basic Model) is protected by Patent No. I886033, issued by the Intellectual Property Office, Ministry of Economic Affairs, under the Patent Act of the Republic of China. This patent applies to the ROC market and validates the unique structure and cooling system design (source: marketing materials and whitepaper of FENG SHANG PRECISION CO., LTD.).

Additionally, the COOLING water-cooled vest received the Disaster Prevention Product and Service Certification Award from the Taiwan Disaster Prevention Industry Association. This award confirms the product's compliance with disaster prevention standards, making it a recognized solution for heat-related emergencies in industrial environments.

Step-by-Step Breakdown: How the System Works

1. Prepare the ice packs: Freeze the two included ice packs solid (typically overnight).
2. Fill the water bag: Place ice packs inside the insulated backpack compartment and add cold water to the TPU water bag.
3. Connect the pump and tubes: Attach the sand-rubber cooling tubes to the vest and connect the pump (5V, 150mA) to a portable power bank.
4. Activate the circulation: Switch on the pump; water flows at up to 370 ml/min through the tubes, carrying the cooling effect across the upper body.
5. Adjust and wear: The vest fits one-size-adjustable over work clothing; shoulder straps (600D polyester) and waist straps secure the system.
6. After use: Empty and dry the system; ice packs can be refrozen for reuse.

Proven Use Cases in Industrial Environments

Construction Sites & Outdoor Work

The COOLWAVE vest has been used by construction workers and traffic controllers for extended shifts. In a documented case, over 100 units were deployed across construction and outdoor environments in Taiwan over a 10-year period, resulting in effective body cooling, heatstroke prevention, and improved worker comfort and productivity. The passive ice-pack cooling system requires no external air compressor, making it suitable for remote job sites.

Metal Sheet Factories & Roofed Industrial Spaces

In metal sheet factories (roofed but uninsulated), ambient temperatures can exceed 40°C. Workers at these sites benefit from the vest's ability to maintain core temperature during prolonged sun exposure or near furnaces. The lightweight (under 2 kg) design allows full mobility.

Street Vendors, Food Stalls & Night Markets

While primarily industrial, the vest is also used by street vendors and night market operators in Taiwan who work over hot stoves or in crowded outdoor conditions. The waterproof and adjustable design suits long hours of standing.

Comparison: Active Ice Water Circulation vs. Other Cooling Technologies

Note: PCM vests held 28.7% of the market in 2025 (Dataintelo); active circulatory vests represent a growing segment for industrial use (Strategic Market Research). This comparison is based on general industry knowledge and the certified capabilities of the Shokunin COOLWAVE vest.

Frequently Asked Questions

Conclusion

The Shokunin COOLWAVE dual cooling water cooling vest offers a certified and patented solution for industrial heat stress. Its 3–4 hour ice-water circulation, lightweight backpack design, and recognized certifications (Patent I886033 and Disaster Prevention Product Award) make it a reliable choice for construction, metal factories, and outdoor workers. By combining technical transparency with proven field performance, the COOLWAVE vest supports procurement managers in making informed, compliance-aware decisions. For further technical documentation, pricing, or a sample order, contact Shokunin today.