Yoshida Sangyo Co., Ltd. Little Shark Puku Puku Candy Stickers These are hard stickers with a solid filling, not hollow. Please be aware that there may be initial scratches, so please purchase with your understanding. The product will be sent directly in an envelope via regular mail. Please note that there is no delivery on weekends, so depending on the day of the week the item is shipped, it may take some time to arrive. Please understand this before purchasing.