OUTDOOR
2026.04.23
【Heat Prevention】Just wet it with water and it’s cool! A cooling cap that achieves "up to -12 degrees"
During GW leisure and outdoor play with children, as well as sports viewing, strong sunlight is a concern. Just wearing an ordinary hat can make your scalp increasingly hot... Check out the cooling cap that can keep you cool just by wetting it with water.
Just wearing it can lower the surface temperature by minus 12°C
The "Hiyasu CAP" is a cap made with a cooling mesh fabric designed for sportswear. It uses a cooling material that employs evaporative heat, allowing you to feel cool just by wearing it, and its effectiveness increases when wet with water.
It reportedly generates a maximum surface temperature difference of about minus 12°C compared to regular cotton fabric, without the need for power or cooling agents. This promises to be incredibly useful in various situations such as outdoor play in the scorching sun, children's club activities, and watching sports.
It reportedly generates a maximum surface temperature difference of about minus 12°C compared to regular cotton fabric, without the need for power or cooling agents. This promises to be incredibly useful in various situations such as outdoor play in the scorching sun, children's club activities, and watching sports.
Even if the cooling effect diminishes, simply soaking it in water again will restore it. It is designed to minimize hair getting wet, making it easy to wear without worrying about your hairstyle!
Can be washed in a washing machine and used every day.
In addition to a shape that covers the entire head, the back of the head uses Velcro. It is easy to adjust the fit, and it is less likely to come off during contact sports like soccer. Furthermore, it can be washed in a washing machine if placed in a laundry net, keeping it clean even during sweaty seasons. Since it is an item used daily, ease of maintenance cannot be overlooked.
The ability to choose sizes and colors for both parents and children is also appealing.
There are two sizes available: adult and child. The colors for adults are white, black, and pink, while for children, they are available in three colors each: white x black, white x blue, and white x pink. It is easy for the player themselves as well as family members cheering outside to incorporate, making it a lineup that can easily be matched between parents and children.
Heatstroke prevention measures should be easy to continue
It is important that heatstroke prevention goods can be comfortably used over time. Items that require a lot of preparation tend to be used less frequently. In this regard, this cap is not a disposable product like a cooling spray, and it does not require any power source. It can be washed and reused, making it easy to incorporate into daily outings. This is its charm.
Product name: Hiyasuru Cap (for children)
Price: From 4716 yen
Product name: Hiyasuru Cap (for adults)
Price: From 7974 yen
Material: Cooling mesh
●Spotsul
Product name: Hiyasuru Cap (for children)
Price: From 4716 yen
Product name: Hiyasuru Cap (for adults)
Price: From 7974 yen
Material: Cooling mesh
●Spotsul


















![[Tokyo, Higashi Ueno] We visited the apartment hotel "Sumu," which is experimenting with a new form of travel.](https://cdn.clipkit.co/tenants/1046/articles/images/000/028/461/large/1443fd84-7dbb-428e-97bf-06be715fabd8.jpg?1770843822)

FASHION
OUTDOOR
WATCH
CAR & BIKE
SNAP
DINING
LIFE
GADGET
GOLF