In Japan, elementary school students have these distinctively shaped stiff backpacks. The colors range from red, black, pink, purple, blue, and more. There's now endless designs of colors and bag styles being sold. They are so stylish that even people outside of Japan are checking them out! On pixiv, there are more than just elementary school students wearing them--see these awesome illustrations!
This Spotlight was suggested by すあま! Thanks for the great suggestion.