A new mattress can be a significant investment and it’s important to keep it looking, feeling, and functioning its best for as long as possible. Whether you’re looking for a king-size mattress protector down to a single mattress protector, it’s a great way to preserve your mattress’ lifespan and keep it free from moisture and other pollutants. A good mattress protector can also help to prevent dust mites and other allergens from flourishing in your mattress.