Mancini’s Sleepworld has a wide array of mattress protectors and mattress covers designed to offer optimal protection to your bed. Mattress protectors help keep your mattress clean. During the night we prespire and shed skin cells, oils and makeup - plus there's the occasional accident, spill or pet-related event that could cause stains on your mattress. Mattress protectors can also help reduce allergies by preventing build-up of dust mites and pollens that can lead to sneezing, runny nose and other allergy symptoms.