The NWT SERTA 2 Pack Zen Fusion KING SIZE Pillow Cover Protectors are a set of two zippered bamboo pillow covers designed for a king size bed. Made from viscose rayon from bamboo, these natural-colored pillow protectors offer cooling and breathable features, perfect for a cool comfortable night's sleep. With a zipper closure for easy removal, these pillow cover protectors are machine washable and tumble dryable for convenient care. The SERTA Zen Fusion model ensures a high-quality product from a well-known brand in the bedroom industry.