Rilakkuma is a character designed by Aki Kondo, produced by San-X in 2003. The name is a combination of the Japanese pronunciation of relax and the Japanese word for bear.
The factual story for Rilakkuma's being is that he mysteriously appears in the female office lady Kaoru's apartment one day. He is a soft toy bear who has apparently decided to take up residence there. On his back is a zipper which when opened reveals a light blue polka dot patterned material. The reason for the zipper on his back is unknown.
His favorite foods are dango, pancakes, omurice, custard pudding, and grapes. True to his name, he enjoys relaxing and his favorite things include sleeping, lying around, watching television, listening to music and soaking in hot springs. He loves using Kaoru's yellow bean bag pillow, although there has been some controversy whether or not the yellow bean bag pillow is in fact Kiiroitori.
What's it worth? Take a look at this Rilakkuma price guide: sold listings for a value indication.