Our design home x Martex allergen barrier mattress pad provides soft, breathable comfort and a durable layer of protection to extend the life of your mattress. The 100% cotton cover is expertly woven with a unique technology that creates a micro barrier against dust, dander, and other allergy triggers. Clean Design Home X Matrix is a collaboration with lifestyle expert Robin Wilson focused on creating a collection of bed and bath products to support an allergen-aware lifestyle.