"I think the reason our cats wear the shedding hats is that they feel safe since it's made of their own hair and smells like them. Because the hats are 100% cat hair, they're so lightweight that the cats even sleep with them on," Umatan shared.

The artists shared the process of making one of these adorable hats:

1. Wash the cat hair removed by brushing beforehand. This step keeps the cat's hair clean and long-lasting.

2. To create a basic cup, lightly roll loose cat hair into a ball roughly the size of a fist.

3. Gently press the center of the ball with your thumb to create a dent, allowing the hat to fit comfortably on a cat's head.

4. Add more hairs to the convex surface (the outside of the cup) until it reaches the desired size, and repeat this process to form the basic cup.

5. For more intricate designs, craft individual parts separately and then attach them to the cup using felting needles and thread. No adhesive is required in this process.

In their book, "CAT-HAIR HATS FOR CATS," which the artists published last October, they provide detailed instructions on creating 25 unique cat hats. The book also covers various hair-handling methods and techniques. Additionally, you can explore their other book, "Cats In Hats," available for purchase on Amazon!

Umatan shared that she often makes hats related to seasonal events. "For example, I make Santa Claus hats for Christmas and witch hats for Halloween to enjoy the events with my cats. Also, since anime is very popular in Japan, wigs of popular anime characters are fun for both the creator and the followers who see them."

For the basic cup described above, it takes about 20 minutes to make. For more elaborate designs, it may take 2 to 3 hours. Umatan shared, "The longest time it took me was when I recreated the popular Japanese robot animation 'MOBILE SUIT GUNDAM.' I spent three days meticulously kneading the hair for that project."

What are your thoughts on these adorable designs? Feel free to share your opinions in the comments!