Made with cool comfort in mind, the Silentnight So Cool pillows are lightweight and breathable to help you stay comfortable and relaxed while you sleep. The pillows are covered in smooth cotton which is naturally breathable to help keep you cool. It's also soft to the touch to offer exceptional comfort throughout the night. The pillows are made in the UK and come with a 2 year manufacturer's guarantee for peace of mind so you can sleep soundly with your purchase. They are also fully machine washable. Silentnight are the UK's most trusted sleep brand with over 75 years' experience in creating products that offer solutions for every sleeper.