Ergonomic design suitable for all types of sleepers. This pillow's memory foam gently supports the head and neck while relieving pressure points in a therapeutic manner for maximum comfort. Each pillow has a cool-to-the-touch circular knit cover with a face made largely of nylon, which provides an additional layer of cooling comfort. The open-cell memory foam has an integrated, ventilated iCOOL Technology System that boosts airflow for improved breathability. The open-cell memory foam also features an adjustable neck support that can be adjusted to fit any body type. The pillow comes with a removable, washable cover for easy cleaning. It is certified by the American Chiropractic Association (ACA) as well as Oeko-Tex, meaning it meets the highest standards in terms of safety and quality assurance. Technical Features: 1. 89%nylon, 8% Spandex, 3% Polyester 2. Open-cell memory foam 3. Cool-to-the-touch circular-knit cover PROS🟢 Greatly cooling technology Comfortable breathable foam CONS🔴 Might be too hard for some users