Celebrate 50 years of Hello Kitty with this Hello Kitty 50th Anniversary Classic Mystery Box Mini-Backpack Key Chains. Features 6 possible key chain designs styled after cosplay mini-backpacks of classic Sanrio characters: My Melody, Hello Kitty, Keroppi, Kuromi, Cinnamaroll and Pompompurin. Each key chain is approximately 3-inches tall x 2 1/4-inches long x 1 1/4-inches wide.