3 Mitex Anti Allergy Encasement Covers manufactured in Ireland provide a protective barrier between you, house dust mites and their harmful allergens. All sizes are available and off sizes can be made to measure. Standard Depth for a 3ft single bed is 23cm, 18cm, 28cm, 30cm and 32cm also available. Please specify depth when ordering. Mitex Anti Allergy Covers are; Registered Class 1 Medical Device Made from micro porous fabric tested to 0.35 of a micron Anti Dustmite, Anti Bacterial, Fully Breathable Anti Bacterial Relief from Asthma, Eczema amd Rhinitis