Best california king mattress protector

By Katie Dyal

Need a mattress protector for your California king bed? Look no further. Whether you want to stretch the lifespan of your mattress, defend against bed bugs, or in need a mattress protector that won’t hold in the season’s allergens — we’ve got you covered. Browse through six of our top mattress protectors, from the plushest to the most practical.

The best california king mattress protector

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Utopia Bedding Quilted Fitted Mattress Pad

Editor’s choice

Protective and plush

The Utopia quilted mattress pad is made for those who want a little extra cushion with the added benefit of protecting their mattress from basic wear and tear, stains, and dust. It’s made for even the deepest mattresses, as it can cover mattresses up to 16inches deep. The quilted topper fits snuggly around California king bed mattresses and adds an extra layer of softness to your mattress top for a more restful sleep. 

Why we love it:

  • Measures 72 x 84 inches
  • Made for long-term use
  • Quilted pattern top
  • Fitted grip skirt system
  • Machine washable and dryable
Cal King (17-20 in. Deep) SureGuard Mattress Encasement

Best mattress protector for bed bugs

Discreet and convenient

Bed bugs aren’t talked about enough in the world of mattresses — but they can prove to be a nuisance to manage. Thankfully, SureGuard has made it easier for you to rid your bedroom of these pests with their handy-dandy mattress protector. With zip-up sides, this six-sided encasement will completely cover and protect your mattress while keeping unwanted creepy crawlies from escaping elsewhere. 

Why we love it:

  • Pure cotton terry top
  • Waterproof
  • Super-fine zipper
  • Velcro zipper seals
  • Hypoallergenic
  • Plastic and chemical-free
TASTELIFE Cal King Waterproof Mattress Pad Protector Cover

Best waterproof mattress

Breathable and cleanly

Accidents happen — we understand. That’s why we have scouted out the best waterproof mattress protectors. This Tastelife mattress encasement is perfect for potty training a toddler, home births, or simply drinking a glass of wine in bed worry-free. If a spill does happen, that’s not a problem. This cover is completely machine washable and will keep your mattress clean for years to come.

Why we love it:

  • Impenetrable waterproof design
  • 80/20 cotton and polyester blend
  • Deep pocket design for a snug fit
  • Ventilation technology that’s great for those who sleep hot
  • TPU-certified
  • Machine washable
PlushDeluxe Premium Zippered Mattress Encasement

Comfiest mattress protector

Allergen-repelling and cloud-soft

With regular mattress protectors, you may experience a stiff, plastic feel while you lay in bed. But not with the PlushDeluxe mattress protector! All you will feel is the cushiony, soft feeling — like a mattress protector was never even there. Rest easy each night knowing you are extending the life of your mattress the comfiest way possible.

Why we love it:

  • Pure terry cloth cotton
  • Breathable
  • Liquid impenetrable
  • Plush mattress feel
  • Machine washable
SafeRest Cal King Size Premium Hypoallergenic Waterproof Mattress Protector

Best vinyl-free mattress protector

Plastic-free and noiseless

Don’t settle for vinyl mattress protectors anymore.

They are obsolete in the world of the cotton terry mattress cover nowadays. If you are health-conscious and would like the best mattress encasement that protects you against harmful allergens, the SafeRest hypoallergenic topper is the perfect solution for those who deal with vinyl allergies, asthma or seasonal allergies. 

Why we love it:

  • Plastic-free
  • Hypoallergenic
  • Liquid resistant
  • SafeRest Invisa-Shield for a natural mattress feel
  • Heat distributing and cooling
  • Machine washable
ZAMAT Premium 100% Waterproof Mattress Protector

Most quiet mattress protector

Natural feel and washable

Are you having a hard time finding a mattress protector that won’t cause you to wake in your sleep from the noise?

Well, with this Zamat zippered protector, you can toss and turn in your bed without ever hearing a sound. This mattress cover features soft terry cloth cotton, resists allergens, and protects all six sides of your mattress from dust and bed bugs. 

Why we love it:

  • OEKO-TEX certified
  • Vinyl, PVC, and phthalate-free
  • Machine washable
  • Moisture-wicking
  • Noiseless 

How to find the best california king mattress protector

The perfect California king bed mattress protector isn’t out of reach. But before you buy, there are three criteria you should consider if you want to protect your mattress for long term use. 

  1. Make sure your mattress protector is plastic-free, or at least partially. Because who likes to sleep on a crunchy, crackly mattress all night? You can easily find protectors that are free from vinyl, PVC, and phthalates. 
  2. You should look for a mattress protector that is six-sided. If you truly wish to protect your mattress from dust, bed bugs, and liquids, then investing in a protector that covers all six sides of your mattress is the best option. Usually, these protectors are easy to slip over your mattress and zip up for ultimate protection. Nothing goes in and nothing comes out. 
  3. Make sure your mattress protector is machine washable. This is important if you want to use your mattress protector for long term use. Being able to remove your mattress cover and throw it in the wash is ideal, especially for parents of young children. You will be able to potty train and keep your mattresses!


Mattress protectors are convenient and help prolong the life of your mattress. Whether you need extra protection, extra cushion, or need help ridding your home of pests, we hope you now feel educated to make the best decision for your home.

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