Rest Evercool King Midnight Blue Pillowcase is a Navy Eastern King pillowcase designed to keep sleep cool and comfortable. Its stretch fabric blend includes 7% ionic silver nylon, 80% nylon and 13% spandex to wick moisture, dry quickly and provide antimicrobial protection. The plain, minimal design and easy care make it a practical choice for nightly use and for those who prefer a performance-focused pillow cover.