Mattress Protector Buying Guide: How to Choose the Right One

A mattress protector is one of the most practical purchases you can make alongside a new mattress. But not all protectors are the same — and buying the wrong type means you either over-spend on features you don't need, or under-invest and leave your mattress exposed to damage that voids the warranty.

This guide covers what to look for, the difference between types, and how to match a protector to your actual needs.

02Why You Need a Mattress Protector

The straightforward reason: most mattress warranties are voided by stains — even minor ones. Mattress manufacturers can't accept returns on soiled mattresses due to health regulations, so the moment your mattress has any visible stain, your warranty protection disappears regardless of what caused the stain.

Beyond protecting the warranty, a good protector also:

  • Keeps dust mites, dead skin cells, and allergens from building up inside the mattress over time
  • Protects against liquid damage from spills, sweat, and accidents
  • Extends the life of the mattress by reducing surface wear
  • Makes your sleep surface easier to keep clean (protectors are washable; mattresses aren't)

The key thing to understand is that a protector is not just for people with kids or pets. Everyone benefits — it's basic mattress hygiene.

03Types of Mattress Protectors

Fitted / Stretch-Top Protector

The most common type. Covers the top and sides of the mattress like a fitted sheet. Easy to put on and remove, machine washable, and available in a range of materials. Good for general protection.

Encasement Protector

Wraps all six sides of the mattress and zips closed. Provides the most complete protection — essential for allergy sufferers and the only effective defense against bed bugs. Harder to put on but worth it if complete enclosure matters to you.

Anchor Band / Strap Protector

Covers the top surface only, held in place by straps at each corner. Less protection than a fitted protector but works well over memory foam toppers or thicker mattresses where fitted options don't stay on easily.

04Materials and What They Do

Material Best For Trade-offs
Cotton Terry Everyday protection, breathability Not waterproof on its own; softest against skin
Waterproof (TPU or vinyl backing) Liquid protection, accident-prone households Can feel crinkly; some trap heat
Tencel / Bamboo Hot sleepers, moisture management Usually more expensive
Wool Temperature regulation, natural moisture wicking Not fully waterproof; typically hand wash only
Polyester Blend Budget-friendly everyday use Less breathable than natural fabrics

Important note on waterproof protectors: Older waterproof protectors used vinyl or PVC, which crunched and trapped heat. Most modern waterproof protectors use a thin TPU (thermoplastic polyurethane) membrane that's quiet, breathable, and doesn't noticeably affect the feel of the mattress. If you've had bad experiences with waterproof protectors in the past, it's worth trying a newer generation product.

05How to Choose the Right One

Start by identifying your primary reason for using a protector:

  • Basic warranty protection only: A simple fitted cotton or polyester protector is sufficient. You don't need to spend much.
  • Liquid protection (spills, sweat, accidents): Get a fitted protector with a waterproof TPU backing. Look for one with a soft cotton or Tencel top for comfort.
  • Allergies or asthma: You want a fully encasing protector with a fine-weave fabric tight enough to block dust mite allergens (usually listed as a specific micron rating on the packaging).
  • Bed bugs: Only a full six-sided encasement with a zipper stop will reliably protect against bed bugs. Don't settle for a fitted protector for this purpose.
  • You sleep hot: Prioritize Tencel, bamboo, or wool materials with good moisture wicking. Avoid protectors with thick quilting or heavy vinyl waterproof layers.
  • You want added comfort: Look at padded mattress protectors or consider a mattress topper if the goal is meaningfully changing the feel of your sleep surface.

06Protectors vs. Toppers: What's the Difference?

This comes up a lot. Here's the simple version:

  • A mattress protector is primarily about protection. It's thin (usually under 1"), goes under your fitted sheet, and its job is to shield the mattress. Some have light padding, but comfort is secondary.
  • A mattress topper is primarily about changing how the mattress feels. It sits on top of the mattress (often under a protector), adds meaningful thickness (2"–4"), and is designed to make a firm mattress softer, add pressure relief, or extend the life of an aging mattress.

Best practice: use both. Put the topper on the mattress, then layer the protector over it (and under your fitted sheet). The protector keeps the topper and mattress clean. The topper delivers the comfort change.

Browse our mattress toppers collection if you're looking to change the feel of your current mattress.

Quick Recommendation Guide

Your Situation What to Get
Just bought a new mattress, want basic protection Fitted cotton/Tencel protector with waterproof backing
Kids or pets in the house Fitted waterproof protector (TPU backing, soft top)
Dust mite allergies or asthma Fully encasing protector with allergen-barrier fabric
Worried about bed bugs Six-sided zippered encasement
Sleep hot at night Tencel or bamboo fitted protector
Mattress too firm, want more comfort Mattress topper + basic fitted protector over it

07Frequently Asked Questions

Do I really need a mattress protector?

Yes — especially if you've just bought a new mattress. A single stain, regardless of cause, typically voids the manufacturer's warranty. A protector costs a fraction of what it protects. It's also easier to wash a protector than to deal with an uncleanable mattress.

Will a mattress protector change how my mattress feels?

A thin fitted protector (non-padded) has minimal effect on feel. Padded protectors add a slight softness. If you want to meaningfully change how your mattress sleeps, look at a mattress topper instead — those are designed for that purpose.

How often should I wash a mattress protector?

Every 1–2 months for most households, or immediately after any accident or spill. Always follow the manufacturer's care label — most fitted protectors are machine washable on a gentle or warm cycle.

Are waterproof protectors hot to sleep on?

Older vinyl-backed protectors had a reputation for trapping heat. Modern TPU-backed protectors are much more breathable. If you're a hot sleeper, look specifically for protectors made with Tencel or bamboo face fabrics and thin TPU backing rather than heavy PVC.

What's the difference between a mattress protector and a mattress pad?

Mattress pads are thicker and quilted — they add some comfort and light protection. Mattress protectors are primarily protective and usually thinner. If your goal is protection, go with a protector. If you want to add comfort, a topper does more.

Does a mattress protector help with allergies?

Yes, if you get the right type. A fully encasing protector with an allergen-barrier weave (typically rated at 6 microns or less) prevents dust mites and their allergens from moving through the fabric. A standard fitted protector offers some protection but not as much as a full encasement.

What size mattress protector do I need?

Match the protector to your mattress size (Twin, Full, Queen, King, or California King). If you have a thick mattress topper, check the depth rating on the protector — some aren't designed to fit over thick combos. Protectors typically list a maximum mattress depth they can accommodate.

Browse our full selection of mattress protectors, or visit any of our LA Mattress Store locations to see options in person and get recommendations from our team.