Beat the heat with logic: The truth behind the rational heat shielding hidden in the colors of parasols

"Black parasols are the most effective" -- if you believe this, it might be a good time to update your common sense.

As someone who has explored the possibilities of umbrellas as a product for over 30 years, I see that choosing a parasol is not simply a matter of fashion, but the result of an extremely rational choice: how to control heat energy. Let's take a look at how to choose the right parasol to comfortably survive the increasingly intense heat of 2025.


1. The exterior is "reflective" white. The rationale is to prevent heat from entering.

Many people misunderstand this, but the most effective physical heat blocking color is not "black" but "white" or "silver." According to basic physics, white reflects sunlight (infrared rays) and black absorbs them.

Black parasols trap heat, making it easy to unknowingly place a "heat source" above your head. On the other hand, light-colored exteriors repel heat, physically reducing the temperature rise underneath. Those who want to stay in top condition at all times will appreciate the noble choice of "keeping out heat."

2. The inside is black for "absorption." It seals off assassins from the ground.

However, this is where our commitment as umbrella specialists comes into play. Choose the black interior color without any hesitation.

The reason for this is glare from the asphalt. UV rays not only come from above, but also reflect off the ground, aiming at you. If the inside of the umbrella is a light color, the UV rays that enter will be scattered by the inside of the umbrella, ironically focusing the light on your skin. The role of "black" is to prevent this, as it absorbs all excess light.

3. A "permanent aesthetic sense" that goes beyond specs

Of course, color isn't everything. Our parasols achieve an unwavering 100% shading rate thanks to our unique, high-performance shading technology. This led us to the solution of " HEATBLOCK ," which allows you to enjoy your favorite design without compromising on functionality.

Using a parasol is more than just a sunshade. It's a new habit of "carrying your environment with you" that puts you in optimal condition even in harsh environments. It offers the comfort of having superior technology on your side, something you can never experience with a disposable umbrella. I believe that keeping one in your bag is the ideal way to be "smart and always on hand" in the modern era.


アンベル株式会社 CEO

執筆者:辻野義宏

30年以上に渡って傘の開発および研究を続けている。革新的な機能を追求し続ける日本の傘ブランド「AMVEL (アンベル) 」では、時代によって変化するベストを追求し、最先端の技術を駆使した傘をお届けしています。