There's a choice of three excellent anti-allergy dustmite proof covers for your mattress here:

1. Naturelle Dust Mite Proof Mattress cover in top-of-the-range 100% unbleached cotton

2. Classic Dust Mite Proof Mattress cover in easycare microfibre

3. Dust Mite proof Mattress cover in waterproofed cotton terry (fitted or fully enclosed)