The Slumberdown is specifically an anti-allergy 4.5 tog summer duvet 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, it's an ideal choice for allergy sufferers and all-year-round use. Our lovely and snuggly hollowfibre filling is soft and comfortable, and the luxury microfibre cover feels wonderful to snuggle up into - it gently wraps around your body so you can be cosy and still move freely through the night. Being a lightweight 4.5 tog duvet, it's great for warmer months or if you prefer a cooler, less heavy duvet. The pillows in this slumber-down anti-allergy 4.5 tog summer duvet with 2 pillows bundle 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.