Whole-Night Cooling: Breescape cooling pillowcases are designed to keep you cool and dry all night for a refreshing, uninterrupted sleep. Crafted with our innovative BlendTek fiber, they’re 3.1x cooler than rayon from bamboo, 4.5x more breathable than cotton, and 1.5x more moisture-absorbent. With a Q-Max value of 0.46, they offer an instant cool-to-the-touch feel that lasts all night.