These covers are recommended for bed-bug and dust-mite protection. They are also the best way to protect the surface of any pillow or mattress from staining and to ultimately extend its life. Our mattress barrier cover is available in depths from 8"-16" (specify depth when ordering). Made slightly oversized to accommodate shrinkage. Our pillow barrier cover is available in standard (20 x 26"), queen (20 x 30"), and king (20 x 36") sizes. Made slightly oversized to accommodate shrinkage.