Slumberdown Anti Allergy, Anti Bacterial 10.5 Tog All Year Round Duvet, Double This 10.5 tog Anti Allergy double duvet by Slumberdown is 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, 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 mid-weight 10.5 tog duvet, it's a great option for use all year round.