These protectors are made from cool, breathable cotton. Easy to care for and quick- drying, with zips to fully enclose your pillows. Suitable for Regular Washing Washable at 40°C, allowing for an effective clean that's much kinder to the environment. 200 Thread Count This number refers to the density of threads per square inch: generally, higher thread counts mean a softer and smoother feel. Please note: This product features a zip closure to ensure a snug fit.