The "Hello Kitty & Maru-chan Original Strap Campaign" offered original straps as a gift to those who applied with three barcodes from eligible products. In addition, to commemorate Hello Kitty's 50th anniversary, Peyoung released a Hello Kitty Bolognese-style Yakisoba. Furthermore, to celebrate the release of Maru-chan Yakisoba, collaboration straps featuring Hello Kitty and Toyo Suisan were created. These straps were not for sale and are currently difficult to obtain. Please refrain from purchasing if you are overly concerned about condition.