Gently cools the head during summer. Perfect for the inner lining of helmets and hats! Recommended for heat prevention: "Aqua Water Inner Cap."
【What is the Aqua Water Inner Cap】 San-ei Electronics sells the "Aqua Water Inner Cap," a heat countermeasure product designed to protect the safety of those working in hot environments. This product is a cap that achieves a cooling effect using only the power of water, without the need for batteries or ice packs. By using it as an inner layer for helmets or hats, it gently cools the head with the power of water during the summer. To use it, simply pour about 120ml of water into the inlet, spread the water evenly with your hands, and attach it to your helmet or hat. Initially, the coldness of the water cools the head, and even after the water reaches room temperature, it reduces the risk of heatstroke through the heat absorption effect utilizing evaporative cooling (the phenomenon where heat is absorbed when water evaporates) for an extended period. There is no need for frequent replacements like with ice packs, and it is an environmentally friendly product that does not use batteries. Since it does not require electricity or fans, it can be safely used in explosion-proof areas or in work sites where noise and dust are concerns. Developed in collaboration with the ATRENA brand of hat manufacturer Shigematsu, it achieves a silhouette that fits perfectly on the head. Weighing only 50g when not filled with water, it can be worn comfortably without any sense of discomfort.
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basic information
Color: Black Size: Free size (Circumference: approx. 58cm / Height: approx. 9cm) Material: Aquatech shell - Outer: 100% polyester / Inner: 100% nylon / Core material: 100% polyester
Price range
Delivery Time
Applications/Examples of results
"Matching Business Partners" Construction, architecture, civil engineering, agriculture, farms, landscaping, manufacturing, factories, transportation, warehouses, light work, building maintenance, cleaning, leisure, events, food factories, restaurant kitchens, food trucks, food delivery, gas stations, etc. It is used not only in sites where hot environments cannot be avoided but also in the chemical and petrochemical industries with explosion-proof areas, as well as in metal and material processing, where electricity and fans are not used.
Detailed information
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How to Attach the Aqua Water Inner Cap
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Temperature comparison
Company information
San-ei Electronics Co., Ltd. is an electronic components trading company established in 1968. We sell electronic components such as capacitors, which stabilize voltage and can store and discharge electricity, and inductors, which can store energy in a magnetic field formed by current. We also engage in product development and contract manufacturing in collaboration with over 50 partner manufacturers both domestically and internationally. We are sales agents for companies such as Murata Manufacturing Co., Ltd. and Rohm Co., Ltd. In recent years, we have expanded our offerings beyond electronic components to include individual products, tackling solutions for changing social environments across various industries, including heat countermeasure products, cleaning robots, and transport robots. Please feel free to contact us with any inquiries.






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