The pillows in this slumber-down anti-allergy pillow firm support 2 packs contain a special anti-allergy hollow fiber filling to help reduce the build-up of bacteria, fungus, and dust mites. They’re perfect for anyone who suffers from allergies, and it’s great to know that they’ve got the seal of approval from Allergy UK. Filled with comfy hollow fiber and with a soft-touch microfibre cover, this anti-allergy pillow pair from slumber down is great for a comfortable, allergy-free night’s sleep. Being firm support, they’re the ideal choice for side sleepers.