Waterproof mattress protectors are a must-have for any mattresses in your home that are at risk of suffering spills or night-time accidents, but that’s not all they’re good for. A mattress protector keeps your sleep surface clean and hypoallergenic. It protects your mattress from dead skin, sweat and sebaceous oils, dust mites, and allergens, like pet dander and fur. Unlike the mattress itself, you can regularly wash your mattress pad, so you know you’re always sleeping in a clean bed.