The pillows in this Slumberdown Medium Support Back Sleeper Anti Allergy Pillow 2 pack are specifically made with an anti allergy filling to help reduce the build-up of dust mites, bacteria and fungus. Tested and approved by leading experts at Allergy UK, they’re an ideal choice for allergy sufferers and all year-round use. The lovely and snuggly hollowfibre filling is soft and comfortable, and the luxury microfibre cover feels wonderful to sink into. Having a medium support level, this anti allergy pillow pair is a great choice for back sleepers, or for those who prefer a versatile, mid-depth pillow.