?WE IMPROVED THE PILLOW COVER ACCORDING THE CUSTOMER’S SUGGESTION: 1. Increase the size of the pillowcase and make it suitable for most of U-shaped pregnancy pillows on the market. 2. Improve the quality of the fabric, the pillow case is softer and more comfortable. 3. Upgraded the zipper for more convenient use. 4. Expanded the zipper area, making it easier to remove the pregnancy pillow cover for replacement. 5. Optimized the zipper area without extra thread.?HEALTHY & COMFORTABLE MATERIAL: The pregnancy pillow cover is made of premium cotton, which is ultra soft and durable. Comfortable pillowcase will let you have a sweet sleep.?SUIT FOR MAJORITY OF U-SHAPED PREGNANCY PILLOW: The size of maternity pillow case is 57x 31.5 inch, which suits for majority of U-shaped pregnancy pillow on market. But in order to ensure accuracy, please measure your maternity pillow firstly.?EASY TO REMOVE AND STORAGE: Durable zippers designed, easy to remove and clean, machine washable, no fade. Small volume, conveniently storage.?SAFETY QUALITY: Our pregnancy pillow cover u shaped is safe, perfect for majority of people.