Two Pack Bamboo Pillow Case (King Pillowcase, Slate Gray) 100% Rayon from Bamboo SUSTAINABLE: Made from sustainable bamboo that requires no herbicides, pesticides or irrigation; considerably more eco-friendly than cotton. EASY CARE: Wash on cold or warm with like fabrics. Dry on low heat. Please wash before initial use. Not reccomended for use with fabric softener. PREMIUM QUALITY: 350 Thread Count, the highest thread count possible for bamboo; As soft as 1200 Thread count Egyptian cotton; incredibly soft, luxurious and silky MOISTURE-WICKING: These pillowcases wick moisture and are incredibly comfortable in all temperatures, are hypoallergenic and a great fit for sensitive skin. They actually get softer as they're washed and do not pill! SET INCLUDES: 2 king pillowcases 21" x 41"