This Slumberdown Anti-Allergy duvet inhibits dust mites, bacteria and fungus. Awarded the UK's Seal of approval, which is only given to products that have been tested and approved to very high standards by leading allergy specialists. This cosy 10.5 tog duvet is suitable for use all year round. It's non allergenic which means there's nothing in it that can cause allergies. Customer Review = 4.7. The Slumberdown Anti Allergy 10.5 Tog Duvet is suitable for use all year round. The duvet inhibits dust mites, bacteria and fungus so it's suitable for allergy sufferers. All Slumberdown Anti Allergy products come with Allergy UK's Seal of approval, which is only awarded to products that have been tested and approved to very high standards by leading allergy specialists. Made in the UK. This Anti-Allergy duvet by Slumberdown inhibits dust mites, bacteria and fungus so it's a suitable for allergy sufferers and all year round use. All Slumberdown Anti Allergy products come with Allergy UK's Seal of approval, which is only awarded to products that have been tested and approved to very high standards by leading allergy specialists.