"This is a luxury box shaped hollowfibre pillow. To set a perfect height and support these pillows are filled with supersoft spiral hollowfibre filling (feels like down). This pillow boasts a 4"" deep side wall, offering greater loft and support compared to regular pillows. A high quality 230 thread count 100% cotton fabric has been used for these pillows, which helps keep the inner filling and the warmth inside the pillows. Each strand of hollowfibre is perforated allowing moisture to flow away from the head and also allow an easier airflow as you sleep. The product is carefully made in the UK."