Mattress protector buying guide: everything you need to know

Protecting your mattress is essential for keeping it clean and performing at its best. A mattress protector adds a vital layer of defence against spills, allergens and everyday wear, helping maintain the life of your mattress. In this guide, you’ll learn what mattress protectors do, the types available, how to choose the right one, and how to use and care for it effectively.

What is a mattress protector?

Foam mattresses are crafted from materials such as memory foam, latex, or polyfoam. These materials contour to the body, offering pressure relief and comfort that can be beneficial for side sleepers and those seeking reduced motion transfer. A protector helps keep your mattress:

  • Clean and hygienic
  • Free from stains that may void warranties
  • Protected from dust mites and allergens
  • In better condition for longer

It’s important to note that a mattress protector is different from a mattress topper. A protector safeguards your mattress, while a topper changes the feel or firmness of your bed.

Types of mattress protectors and their benefits

Mattress protectors come in a range of materials and constructions. Understanding the differences helps you choose one that suits your lifestyle and sleep preferences.

WATERPROOF MATTRESS PROTECTORS

These use a thin protective membrane to prevent liquids from reaching your mattress.

Benefits:

  • Shields against spills and accidents
  • Helps prevent mould and mildew
  • Keeps the mattress stain free

BREATHABLE MATTRESS PROTECTORS

Made from fabrics that allow airflow, these help regulate temperature.

Benefits:

  • Improves ventilation
  • Reduces heat build up
  • Enhances comfort for warm sleepers

ALLERGY-FRIENDLY MATTRESS PROTECTORS

Designed to reduce exposure to dust mites and allergens.

Benefits:

  • Creates a barrier against common allergens
  • Supports a cleaner sleep environment
  • Ideal for asthma or allergy sufferers

COOLING MATTRESS PROTECTORS

Often made with moisture wicking or temperature regulating materials.

Benefits:

  • Draws heat away from the body
  • Helps maintain a cooler sleep surface
  • Useful in warmer climates or for hot sleepers

Mattress protector fit types

Different construction styles offer different levels of protection:

mattress fit icon fitted

FITTED PROTECTORS

Similar to a fitted sheet, with elasticated edges.

Best for: everyday use, easy removal and washing.

mattress fit icon encasement

ENCASEMENT PROTECTORS

Fully zip around the mattress for 360° protection.

Best for: allergy sufferers, dust mite control, long term hygiene.

mattress fit icon strap

STRAP STYLE PROTECTORS

Attach with corner straps.

Best for: basic protection, occasional use.

How a mattress protector helps maintain your mattress warranty

Most mattress warranties, including ours at Sealy New Zealand, require the mattress to be free from stains. Even small marks may void a warranty claim. A mattress protector acts as a first line of defence, helping keep your mattress in the condition required for warranty eligibility.

How to choose a mattress protector

When selecting a mattress protector, consider the following factors:

icon size fit

SIZE AND FIT

Match your mattress size (single, king single, double, queen, king, super king) and check the depth, especially for plush or pillow top models.

icon noise feel

NOISE AND FEEL

Modern protectors should feel soft and quiet, not crinkly or plastic like.

icon care requirements

CARE REQUIREMENTS

Most protectors are machine washable, but always check the care label.

icon material

MATERIAL

Different materials offer different benefits:

  • Cotton – soft and breathable
  • TENCEL™ – cooling, moisture wicking, eco friendly
  • Polyester blends – durable and cost effective
icon protection level

PROTECTION LEVEL

Choose based on your needs:

  • Waterproof for families or pet owners
  • Cooling for warm sleepers
  • Allergy friendly for sensitive sleepers
icon environmental considerations

ENVIRONMENTAL CONSIDERATIONS

Look for:

  • OEKO TEX® certified fabrics
  • Organic cotton
  • Sustainable fibres like TENCEL™

How to use a mattress protector

Using a mattress protector is simple, but proper placement ensures it works effectively.

  • Place it directly over your mattress, under your fitted sheet
  • Ensure a snug fit so it doesn’t bunch or shift
  • For waterproof protectors, ensure the membrane side faces the mattress
  • Wash regularly to maintain hygiene and performance

How to clean a mattress protector

Proper care helps your protector last longer and perform better.

  • Machine wash regularly, weekly for allergy sufferers, monthly for others
  • Use mild detergent to protect the fabric and membrane
  • Avoid bleach or harsh chemicals
  • Tumble dry on low or line dry
  • Ensure it’s fully dry before placing it back on your mattress

How often should you replace a mattress protector?

Most mattress protectors last 1–3 years, depending on use and material quality. Replace yours if you notice:

  • Reduced waterproofing
  • Tears or thinning fabric
  • Persistent odours
  • Loss of elasticity

Supporting better sleep, one layer at a time

Even though we don’t sell mattress protectors at Sealy New Zealand, understanding how to choose and care for one helps you get the most from your mattress. A well chosen protector can help protect your mattress and keep is clean and hygienic.

FAQs

Breathable or cooling protectors help prevent heat build up. Waterproof protectors vary by material quality.

High quality protectors are designed to feel unobtrusive. Waterproof protectors vary by material quality.

Yes, place the electric blanket on top of the protector unless the manufacturer advises otherwise.

Yes. A topper adds comfort, but a protector adds hygiene and protection.

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