Bed Corner Sheet Grippers- 4 Per Card (2-Pack/cards) CARDS - You receive 2 cards with 4 sheet grippers per card for a total of 8 sheet grippers. TIGHT BED SHEETS - The grippers will keep your sheets smoothly in place. GRIP - Easy to open clips have plastic inserts for a extra strong grip. SHEETS - Ideal for any size sheet corner. BED TYPES - Also good for memory foam beds and water beds.