Protect your mattress investment with the Helix Waterproof Mattress Protector. Its waterproof design guards against spills and accidents, while breathable fibers keep air flowing so you stay comfortable all night long. Unlike bulky, crinkly protectors, this one stays quiet and soft against your skin. It's fully machine washable for easy care, making it simple to keep your sleep surface fresh. Every protector ships free, is backed by a 1-year warranty, and is covered by Helix's 30-night sleep trial.