Cal King Antimicrobial Protectors

Find Cal King Antimicrobial Protectors at Mattress Firm to help complete your sleep setup. Explore available options and choose the right protector for your California king mattress based on your comfort preferences, size needs and budget.

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Sleepy's Signature TOTAL DEFENSE Mattress Protector

5687

Starting at

$129⁹⁹

Temperature
Allergies

Save $100 when you bundle¹⁰.

Sleepy's Deluxe Comfort Cool Mattress Protector

4179

Starting at

$169⁹⁹

Temperature
Allergies

Save $150 when you bundle¹⁰.

Sleepy's Signature Total Encasement Mattress Protector

1001

Starting at

$159⁹⁹

Temperature

Sleepy's 3" Gel Memory Foam Mattress Topper

396

Starting at

$189⁹⁹

$269⁹⁹

$80 OFF

Medium Comfort,

Temperature

A California King antimicrobial mattress protector helps defend your mattress from everyday moisture, spills, sweat and common household allergens while preserving a clean, comfortable sleep surface. Designed to fit California King mattresses, these protective covers provide full-size coverage for the longer, narrower dimensions of a Cal King bed and help reduce the buildup of odor-causing bacteria on the protector’s surface. A fitted California King mattress protector can also help guard against dust mites, skin flakes and accidental stains, making it a practical choice for primary bedrooms, guest rooms and shared sleeping spaces. Look for a breathable, quiet design with a secure elastic skirt or fitted construction that stays in place without changing the feel of your mattress. Choosing the right California King antimicrobial mattress cover starts with checking mattress depth, fabric quality and care instructions. Waterproof or water-resistant layers can offer added protection against nighttime accidents, beverages and perspiration, while soft cotton, polyester or blended fabrics help maintain a comfortable feel under your sheets. For convenient mattress care, select a machine-washable Cal King protector that can be cleaned regularly and dried according to the manufacturer’s recommendations. An antimicrobial mattress protector is not a substitute for routine cleaning, but it can add an extra layer of defense and help extend the fresh, supportive feel of your California King mattress. Explore Mattress Firm for California King mattress protectors and other bedding essentials designed to help you sleep well so you can live well.

What is an antimicrobial mattress protector? + -

An antimicrobial mattress protector is a fitted bedding layer made with materials or treatments designed for mattress protection and freshness. It can also add a comfortable barrier between your mattress and everyday moisture, spills and debris.

What materials are used in antimicrobial mattress protectors? + -

Common materials include cotton, polyester, rayon blends and protective membrane layers. The best material for you depends on your preferred softness, breathability and care routine.

How should I care for an antimicrobial mattress protector? + -

Follow the care instructions on the product label. Many protectors can be machine washed and dried, but recommended water temperatures, cycle settings and drying methods can vary by construction.

Can an antimicrobial mattress protector be used with a mattress pad or topper? + -

Yes, a protector can generally be layered with a mattress pad or topper. Place the protector directly over the mattress, then add the other bedding layer above it.

What features should I look for in an antimicrobial mattress protector? + -

Consider the fabric feel, breathability, stretch, waterproof construction, elasticized fit and care requirements. A quiet, flexible design can help the protector feel more comfortable beneath your sheets.