A single bed can be just as prone to dust mites as larger beds. Our single-size encasements (for single mattresses and single duvets) provide complete dust mite protection for a twin/single bed. The single mattress encasement fully zips around your mattress to lock out dust mites and allergens. You can pair it with a matching single duvet encasement for total bedding coverage. With your single bed outfitted in these allergy covers, even a small bed stays free of dust mite allergens – helping allergy sufferers sleep soundly.