OUR PILLOWCASE SET HAS EARNED THE GOOD HOUSEKEEPING SEAL - Premium Set of 2 King Pillowcases (21" W × 40" L): Simple open-end design (4” hem) with slip-on convenience, no zippers or flaps. This Seafoam shade is a soft, muted aqua green with a light blue undertone—not a bright turquoise or deep mint. This pillow case king size set pairs well with our 400 thread count sheet sets. Independently tested to earn the prestigious Good Housekeeping Seal. 400 Thread Count Pillowcases: 100% long-staple cotton, soft sateen weave. These king size pillow cases set of 2 are smooth and soft to the touch with a balanced handfeel and subtle sheen that feels gentle on skin. Built to Last: These king size pillow cases set of 2 cotton are independently lab tested for pilling, fading, and shrinkage. Designed to soften over time for lasting comfort. Easy Care: Machine wash warm, tumble dry low and remove these pillowcases king size promptly to help reduce wrinkles. Safety & Responsibility: Every item bearing the OEKO-TEX STANDARD 100 label is certified as having passed safety tests for harmful substances. Made in a family-run factory in India with plastic-free packaging.