Will the Bear Pillow fit my pillow case?

The queen-sized Bear Pillow is 15.75" x 25" x 5.5" and fits in a standard and/or queen size pillowcase. The king-sized Bear Pillow is 15.75" x 35.4" x 5" and fits a king-sized pillowcase. To prevent the pillow from slipping out of the case, we recommend using an envelope pillowcase.