Safe-dent paper tray covers are great quality heavy bond paper with low absorbency. They feature rounded edges to give you a better fit. They fit comfortabley in any "size B" tray. And they come in a variety of vibrant colors, in an easy dispensing box. 1000 sheets in a pack. Can be used as placemats as well as tray covers. Cleanup couldn't be simpler, be it a dentist's office, doctor's office, hospital, or a nursing home, safe-dent's got you covered.