Microfiber | Perfect protection for pillows: Our waterproof pillow protector is made with revolutionary polyester knitted jersey fabric and waterproof TPU membrane layer. The protector surface is breathable and highly durable. | Hidden zipper design and non noisy: These non-intrusive zippered pillow cases that won’t annoy you during sleep.You don't need to worry about getting your pillow wet, the pillow will be better protected than ever. | PACKAGE INCLUDE: 4 x Zippered Waterproof Pillow Protector (Pillows are not included.) | Easy care and machine washable: Machine wash cold on delicate cycle, tumble dry low heat, do not use fabric softener or dyer sheets. Do not bleach. Do not iron. Do not dry clean. | Non noisy: The TPU ensures a quiet and restful night's sleep, free from any rustling or crinkling sounds.