To make people enjoy letter exchange in the summer period, Japanese post issued a new collection of "Summer Greeting" stamps. It is dedicated to popular Sanrio characters adored in Japan and all over the world – Hello Kitty, Dear Daniel, My Melody and Little Twin Stars.
Sanrio is a Japanese company that designs, licenses and produces products focusing on the kawaii (cute) segment of Japanese popular culture. Their products include stationery, school supplies, gifts and accessories that are sold worldwide and at specialty brand retail stores in Japan. Sanrio's best known character is Hello Kitty, a white cat with red bow and no visible mouth, one of the most successful marketing brands in the world.