Our silk blend pillow is filled with layers of pure long strand mulberry silk floss wrapped around a polyester core to provide a fuller pillow. Soft and lofty, the silk blend pillow is ideal for those who prefer to sleep on their side and back. Naturally hypoallergenic, this silk pillow is ideal for those with asthma and is the only natural choice for those with allergies. The hollow fibre core helps the pillow to retain it's softness and shape.