Back To School Mattress Toppers Cal King

Prepare for the new school year with Back To School Mattress Toppers Cal King options from Mattress Firm. Explore a selection of toppers in California King sizing to find the right addition for your sleep setup.

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Sleepy's 3" Gel Memory Foam Mattress Topper

396

Starting at

$189⁹⁹

$269⁹⁹

$80 OFF

Medium Comfort,

Temperature

Beautyrest BR800 13.5" Medium Pillow Top Mattress

1863

Starting at

$819⁹⁹

$1499⁹⁹

$680 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Toss and Turn
Pain
Bed Partner
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Purple Original Mattress

59743

Starting at

$1760⁰⁰

$2199⁰⁰

$439 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Temperature
Pain
Bed Partner
Toss and Turn
Allergies

Sealy Essentials Winter Green 13" Plush Euro Pillow Top Mattress

548

Starting at

$779⁹⁹

$1459⁹⁹

$680 OFF

Plush Comfort, best for

Side Sleepers
Bed Partner
Pain
Temperature
Toss and Turn
Allergies

Beautyrest BR800 12" Plush Euro Top Mattress

735

Starting at

$569⁹⁹

$1399⁹⁹

$830 OFF

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner
Temperature

Sealy Essentials Winter Green 12" Medium Euro Top Mattress

603

Starting at

$739⁹⁹

$1379⁹⁹

$640 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn
Allergies

Tempur-Pedic TEMPUR-Cloud Mattress Topper

668

Starting at

$214⁰⁰

Medium Comfort,

Temperature
Allergies

Tulo Gel Memory Foam Zoned Support Mattress Topper

122

Starting at

$107⁹⁹

$159⁹⁹

$52 OFF

Medium Comfort,

Temperature

Sleepy's 4" Reversible Gel Memory Foam Topper

Starting at

$199⁹⁹

$299⁹⁹

$100 OFF

Medium Comfort,

Temperature
Allergies

Tempur-Pedic TEMPUR-AdaptMattress Topper

8510

Starting at

$279⁰⁰

$409⁰⁰

$130 OFF

Medium Comfort,

Temperature
Allergies

Sealy Essentials Winter Green 12" Plush Euro Top Mattress

393

Starting at

$739⁹⁹

$1379⁹⁹

$640 OFF

Plush Comfort, best for

Side Sleepers
Bed Partner
Pain
Temperature
Toss and Turn
Allergies

Tempur-Pedic TEMPUR-Adapt + Cooling Mattress Topper

4642

Starting at

$509⁰⁰

Medium Comfort,

Temperature
Allergies

Tempur-Pedic TEMPUR-Adapt 2.0 11" Medium Mattress

3651

Starting at

$2799⁰⁰

$2999⁰⁰

$200 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Pain
Temperature
Allergies
Bed Partner
Toss and Turn

Receive $300 Instant Gift⁴ with purchase + Calm app 3-month free trial

Purple RestorePlus 13" Soft Hybrid Mattress

3530

Starting at

$3600⁰⁰

$4399⁰⁰

$799 OFF

Plush Comfort, best for

Side Sleepers
Pain
Allergies
Bed Partner
Toss and Turn
Temperature

Purple Plus Mattress

1998

Starting at

$2080⁰⁰

$2599⁰⁰

$519 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Pain
Temperature
Bed Partner
Toss and Turn

Beautyrest Black Series Three 16.75" Plush Pillow Top Mattress

1458

Starting at

$4599⁰⁰

$5199⁰⁰

$600 OFF

Plush Comfort, best for

Side Sleepers
Bed Partner
Pain
Temperature
Toss and Turn

$300 ⁶ adjustable base instant gift with purchase.

Purple RestorePlus Cool Touch 13" Hybrid Mattress

997

Starting at

$3900⁰⁰

$4699⁰⁰

$799 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Pain
Allergies
Bed Partner
Toss and Turn

$300 ^◇ adjustable base instant gift with purchase.

Stearns & Foster Lux Estate 16" Medium Euro Pillow Top Mattress

1794

Starting at

$3899⁰⁰

$4499⁰⁰

$600 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

Receive $300 Instant Gift⁴ with purchase.

Purple RestorePremier 13" Firm Hybrid Mattress

1590

Starting at

$4400⁰⁰

$5199⁰⁰

$799 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Allergies
Bed Partner
Toss and Turn
Temperature

Beauty Sleep® Midnight Dream II 14.25" Medium Pillow Top Mattress

309

Starting at

$779⁹⁹

$1499⁹⁹

$720 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Toss and Turn
Bed Partner
Temperature
Pain

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beauty Sleep® Midnight Dream 12.25" Medium Euro Top Mattress

287

Starting at

$669⁹⁹

$1399⁹⁹

$730 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Toss and Turn
Bed Partner
Pain
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Serta Classic Blissville 12.5" Plush Euro Top Mattress

274

Starting at

$659⁹⁹

$1799⁹⁹

$1140 OFF

Plush Comfort, best for

Side Sleepers
Pain
Temperature
Bed Partner
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Kingsdown Crown Imperial 16" Plush Euro Top Mattress

167

Starting at

$6899⁰⁰

Plush Comfort, best for

Side Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Kingsdown Crown Imperial 16" Firm Euro Top Mattress

125

Starting at

$5299⁰⁰

$6899⁰⁰

$1600 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Sealy Ellenton II 14" Soft Euro Pillow Top Mattress

Starting at

$1819⁰⁰

Plush Comfort, best for

Side Sleepers
Pain
Allergies

FREE ADJUSTABLE BASE ³ with code ELEVATE

Sealy Posturepedic Pro Lacey II 14" Medium Mattress

Starting at

$2399⁰⁰

Medium Comfort, best for

Back, Side, Stomach Sleepers
Pain
Temperature
Allergies
Bed Partner
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

A California King mattress topper can help refresh an older bed before the back-to-school season, creating a more comfortable sleep space for students, parents and guests. Measuring approximately 72 inches by 84 inches, a California King topper adds cushioning across the full surface of a longer, narrower mattress and can help adjust the feel without replacing the entire bed. Memory foam mattress toppers provide pressure relief by contouring to the body, while latex toppers offer responsive support and breathable comfort. For hot sleepers, look for cooling mattress toppers made with ventilated foam, gel infusions or breathable fiber blends to help promote airflow throughout the night. Choosing the right California King mattress topper can make it easier to settle into a consistent sleep routine during busy school mornings and late-night study sessions. The best back-to-school mattress topper depends on the mattress condition, preferred comfort level and sleep position. Side sleepers may appreciate a plush California King mattress topper that cushions the shoulders and hips, while back and stomach sleepers often benefit from a thinner, more supportive topper that helps maintain a comfortable sleep posture. Consider a secure, nonslip design with a washable cover for convenient care, especially in households preparing for a new school year. Pairing a California King mattress topper with breathable sheets, a supportive pillow and a waterproof mattress protector can create a more complete sleep setup. For shoppers searching for a Cal King mattress topper, comparing materials, thicknesses and cooling features can help you find comfortable, affordable bedding for better zzz's all school year.

What materials are commonly used in mattress toppers? + -

Common materials include memory foam, latex, fiberfill and quilted fabric. Each option has a different feel, texture and care routine, so review the product details before choosing.

What features should students look for in a mattress topper? + -

Look for a removable, washable cover, breathable materials and corner straps or elastic edging that help keep the topper in place. A compact design can also make storage easier between school terms.

How should a mattress topper be cleaned? + -

Follow the manufacturer’s care instructions. Many toppers have removable covers that can be machine washed, while the topper itself may need spot cleaning and air drying.

How do you prepare a mattress before adding a topper? + -

Remove all bedding, clean the mattress surface and allow it to dry completely. Place the topper flat with the correct side facing up, then secure it according to the product instructions.

How can a mattress topper fit into a back-to-school bedding setup? + -

Pair it with breathable sheets, a washable mattress protector and bedding suited to the season. Keeping the setup simple can make changing linens and organizing a student room easier.