Cave Shoes Show Face Show, Children'S Favorite

Indoors are still white. When you go out, the sun becomes a light pink, and a pair of shoes can be worn as two pairs of shoes. Before the discoloration, the cup is just plain black, red and white. After adding hot water or cold water, it can produce different colors and patterns, or even photos of yourself. In this changing era, more and more products are performing their own "face changing show".

Hole shoe is a kind of summer popular in recent years.

Because of its large shoes and vamp, there are many holes in the vamp.

It was originally a shoe designed for rowing, but because of its excellent skid resistance, comfort and rich colors, it was quickly attracted the attention of ordinary consumers.

Now, the designer has developed the function of discoloration on comfortable performance.

"It's really amazing. It's white in the house. Once it's in the sun, it turns pale pink."

Ms. Wang, who works in Shijingshan, Beijing, said: "this is especially attractive to children. They like this feeling of being changed."

Why is there such a "face changing" function?

Photosensitive materials like that.

"The photosensitive material can use the sun (UV light) to control the color changes in the interior for colorless or colored, outdoor ultraviolet light to show color or become another color," said the owner of a Taobao shop. "

It is known that there are two kinds of photographic materials. They are colorless basic colors, such as colorless, purple, colorless, reddish, colorless and orange, while the other is chromophoric photosensitive material, which is colored in the interior. It changes into another color in the indoor environment, such as pale blue, purple, light red, orange, light green, red, yellow to orange, light red to purple, yellow to green, pale green to blue, gray to coffee.

Of course, it is not just shoes and cups, but also key chains, personal crafts, glasses and so on.