The Snuggledown Scandinavian Hollowfibre Medium Support Back Sleeper Pillow is filled with polyester hollowfibre and surrounded by a soft touch microfibre cover to create cosy and comfortable pillows. As synthetic pillows, they're non-allergenic, meaning there's nothing in them that could cause allergic reactions, which is great for peace of mind and essential for allergy sufferers. Having a medium support level, these Scandinavian Hollowfibre pillows from Snuggledown are a great choice for back sleepers, or for those who prefer versatile, mid-depth pillows.