Top 10 Firm Mattress Topper California King – Mattresses Toppers

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1. Novilla


Gel & Bamboo Charcoal Infused for Motion Isolation & Pressure Relieving, Medium Firm Memory Foam Mattress Topper California King, Novilla 4 Inch Cal King Mattress Topper, with Breathable Bamboo Cover

Novilla #ad - Certipur-us & oeko certified ensure safety - certipur-us certified foam and oeko-tex bamboo cover to meet specific standards, so no worries about its safety. Includes 1. 5" cooling gel memory foam & 2. 5" bamboo charcoal foam, bounces of your traditional spring mattress, enjoys minimized motion transfer and prolongs your mattress life.

Suitable for sofa bed, college dorms, RV, Tatami, camping, outdoor Yoga and more. Hassle free refund & warranty- our 4 inches memory foam mattress topper offer 30 days money back return policy and a 3-year warranty. Brings new life to your mattress & multi-usage- saving yourself from the uncomfortable bed without spending high replacement cost, guest bed, adds extra plushness and softens firm mattresses, you need one Novilla california king mattress topper . Prevent body aches, prevent shoulder/back/hit pain caused by over sinking or hard mattress.

Skin-friendly bamboo cover for health- comes with a bamboo mattress cover for better moisture absorption, breathable. Any questions or dissatisfaction, our professional service team will help you out 24/7. 4 corner anti-slip elastic straps design to keep the memory foam mattress topper california king from sliding, no need to adjust your bed daily. Simply allow the compressed foam mattress topper california king size to fully expand for 24 hours and dissipate the slight new foam smell. Our 4 inch mattress topper utilizes a 2-Layer design.
BrandNovilla #ad
ManufacturerNovilla #ad
Height4 Inches
Length84 Inches
Width72 Inches
Part NumberNV0T801-4-CLK

2. Homhougo


Homhougo Medium Firm Memory Foam Mattress Topper with Bamboo Cover,  3-Inch Dual Layer Bed Topper for Pressure Relieving, California King Cal King Mattress Topper

Homhougo #ad - Besides, this california king mattress topper provides a soft side and a firm side for you to choose from by flipping the foam layer. 90-night risk-free trial - foam topper will air up to its full shape in 48-72 hours at a suitable temperature73F~86F and the new product smell will dissipate.

Skin-friendly bamboo cover - a zippered cover comes with the topper features adjustable elastic straps in the 4 corners and non-slip fabric on the bottom, help to keep the topper secure on your mattress. Natural & fresh additives - this memory foam mattress topper cal king features natural infusions like green tea and bamboo charcoal which provide a fresh scent to help you relax your body and nerves.

One topper, two experiences - combine with 1" memory foam and 2" high-density base foam to balance soft and well-support. If any problem, please feel free to contact us. Certified safe material - mattress topper cal king is made of foam that is certified by CertiPUR-US and a knitted cover that is certified by OEKO-Tex Standard 100, you can sleep on it without any worry.
BrandHomhougo #ad
ManufacturerHomhougo #ad
Height3 Inches
Length83 Inches
Width71 Inches

3. Amazon Basics


2-inch, Amazon Basics Cooling Gel-Infused Firm Support Mattress Topper, Alternative Latex Foam, California King

Amazon Basics #ad - Note: upon opening you may experience a slight “new” smell which is a harmless and normal effect of vacuum-packing memory foam. Designed to be placed on top of your existing mattress for instant, responsive support.

2-inch california king alternative latex foam mattress topper infused with temperature-regulating cooling gel for a restful night’s sleep. Unlike memory foam, alternative latex provides more “bounce” and less “sink” for a comfortably firm feeling. Delivered vacuum-packed for easy moving and convenience; allow up to 72 hours for mattress topper to fully expand once opened. Made in the usa and CertiPUR US certified.
BrandAmazon Basics #ad
ManufacturerAmazon Basics #ad
Height2 Inches
Length84 Inches
Weight17.5 Pounds
Width72 Inches
Part NumberG-TOP-5050A-CK-WHT

4. BedStory


BedStory 4 Inch Memory Foam Mattress Topper Cal King, Foam Mattress Pad with Breathable Removable Cover, High-Density Memory Foam, Gel & Bamboo Charcoal Infused Bed Toppers

BedStory #ad - Besides, the bed topper comes with non-slip elastic straps to keep the topper in place. 4 inch cal king size memory foam Mattress Topper - Gel & Bamboo Charcoal Infused. Contouring support: the premium memory foam adapts to your unique shape for personalized comfort and support.

What you get: bedstory memory foam mattress topper comes with CertiPUR-US foam. Removable cover: its breathable cover can be removed for easy care. Highly breathable: the gel infusion promotes a better sleep experience compared to other materials. Besides, we’ve got you covered for manufacturing defects. Be ready to wake up refreshed and energetic every day! Bamboo charcoal infused: The bamboo charcoal infusion is extremely efficient in maintaining the freshness of your topper. For hot weather, an electronic fan or air conditioner is still recommended.
BrandBedStory #ad
Manufacturermeishi #ad
Height4 Inches
Length84 Inches
Width72 Inches

5. Linenspa


CertiPUR-US Certified, Linenspa 3 Inch Memory Foam Mattress Topper, Gel Infused California King Mattress Topper

Linenspa #ad - Perfectly paired: pair your memory foam gel topper with a mattress topper cover for added protection and enhanced comfort, or just order the topper on its own—either way we’ve got you covered. Rest assured: sleep soundly knowing your mattress topper is CertiPUR Certified.

Available in a full range of sizes, you're getting the best of the best with our high quality gel infused memory foam. Personalized comfort: plush gel infused memory foam conforms to your curves for personalized comfort that hugs you to sleep—available in 2 or 3 inch mattress topper profiles. Mattress makeover: rejuvenate an old mattress, soften a too-hard mattress, or simply prolong the life of your mattress with a protective layer of gel infused memory foam.

Easy setup: your gel infused mattress topper arrives compressed, unroll the mattress, but set up only takes 4 easy steps: open your package, cut the plastic, then allow 24-48 hours to expand allow extra time for expansion in cooler temperatures.
BrandLinenspa #ad
ManufacturerLinenspa #ad
Height3 Inches
Length20 Inches
Width14.96 Inches
Part NumberLS30CK30GT

6. Sleep Innovations


2 Inch Cooling Gel Memory Foam Plus 2 Inch Pillow Top Cover, Sleep Innovations Dual Layer 4 Inch Memory Foam Mattress Topper, Medium Support, California King Size

Sleep Innovations #ad - Committed to great sleep; we invented the memory foam mattress in a box and we continue to innovate restorative foams and fabrics to give you the best night's sleep; This topper comes with a 10 year warranty. Bedtime made better; this gel foam mattress topper offers plush support for all sleep positions; The 2 inch pillow top cover is removable, washable, and stretches to fit your bed like a fitted sheet.

News & World Report. Made in the usa; our memory foam mattresses, mattress toppers, and pillows are all hypoallergenic and CertiPUR-US certified, offering you high quality materials for high quality sleep. Instantly improve any mattress; relieve pressure points, enjoy deeper sleep, and wake up feeling refreshed with our line of memory foam, gel memory foam, dual layer, and pillow top mattress toppers.

Dual layer gel memory foam mattress topper; this luxurious 2 layer mattress topper features a 2 inch soft quilted pillow top cover filled with plush fiber fill and 2 inches of cooling gel memory foam; Ranked the Best Topper of 2022 by U. S.
BrandSleep Innovations #ad
ManufacturerSleep Innovations #ad
Height4 Inches
Length80 Inches
Width76 Inches
Part NumberG-TOP-95140-CK-WHT
Warranty10 year limited manufacturer



CertiPUR-US Certified, Foam Mattress Topper with Removable & Washable Cover, Cal King Size, Pressure-Relieving Memory Foam Mattress Topper for Back Pain, RECCI 2 Inch California King Mattress Topper

RECCI #ad - The cover also helps enhance the life of the inner foam in daily use. Pure memory foam - recci 2-inch mattress topper uses 100% pure memory foam for better performance in softness and support, and you can enjoy a cloud-like sleep and get enough support at the same time.

Before first use, please put the foam mattress topper in a ventilated area for 48 hours until fully expanded. Pressure-relieving comfort - the foam mattress topper shapes your body contouring naturally and helps lower your head, shoulders, back, neck, and hip pain. You will get a well-rest sleep at night and get an energetic morning since it! Contact us for any questions when you need help! Washable cover - the memory foam mattress topper with a 3-sided zipper cover that you can remove and wash when needed, and it with four adjustable straps over corners which can help hold the topper tightly than others.

It’s an ideal choice for bedroom, living room, guestroom, or college dorms. Instructions - please be careful not to scratch the inner product during unpack process. Durable & multi-use - certificated by certipur-us and oeko-tex, the california king mattress topper can last its original shape for a long time for its premium material both inner foam and cover.
BrandRECCI #ad
ManufacturerRECCI #ad
Height2 Inches
Length84 Inches
Weight11.09 Pounds
Width72 Inches
Part NumberR2-Calking



Lucid 4 Inch Mattress Topper California King – Memory Foam – Bamboo Charcoal Infusion – Cooling Ventilation – Hypoallergenic – CertiPur Certified Foam – Dorm Room Essentials

LUCID #ad - Bamboo charcoal – bamboo charcoal is infused in the bed topper, wicking away moisture and regulating odors for a fresh sleep environment. Simply unbox, unroll, and wait 24-48 hours for the topper to expand.

Memory foam – 4 inches of memory foam provide a plush “sink-in” feeling like a cloud. Foam mattress topper is ventilated to promote air transfer for a comfortable sleep climate. Topper in a box – we design all our lucid mattress toppers to ship from our home to yours in an easy-to-carry box. Certified foam – all lucid memory foam is certiPur-US certified for safety and performance of the mattress topper to give you peace of mind. Protect your topper- we recommend using a lucid mattress protector for your bed to protect against any leaks or spills to ensure a long life of the memory foam mattress topper.
BrandLUCID #ad
ManufacturerLUCID #ad
Height24 Inches
Length19 Inches
Weight4.41 Pounds
Width19 Inches
Part NumberLU40CK30BT
Warranty3-year u. S. Warranty guards against manufacturer defect.



Mattress Topper – Organic Coconut Coir Cotton Wool 3 Inch Pad Pillowtop Medium Firm California King Size Bed Comfort Sleep Body Support, NATURAL LIFE PALMPRING Coconut Coir Mattress 3 Inch

NATURAL LIFE PALMPRING #ad - With just this one topper, transform your bed to give you the ultimate sleeping experience. Standard mattress sizes include twin 38”x75”, queen 60”x80”, king 76”x80”, full 54”x75”, Twin XL 38”x80”, Cal King 72”x84”. Coconut coir topper – our organic coir pillowtop mattress pad is an easy and cost-effective way to turn your ordinary mattress into a pillar of comfort and support.

Premium organic mattress – the materials keep bodies cool when it's hot and do not retain moisture when it's humid. Benefits – this mattress topper features a plethora of benefits to ensure you get the best sleep every night. The wool is naturally resistant to fire, an organic cotton layer serves as a top cover for our mattresses. With the support layer offering comfort and perfect firmness, this mattress topper will have you wanting to stay in bed! It provides strong support for the body in your sleep, so you wake up feeling good and well rested.

Organic materials – made from organic palm coir, replacing traditional chemical sprays. This coconut coir topper is best for those who enjoy firm surfaces for that added support in their sleep. Buy one or multiple for every bed in your household so the whole family can enjoy comfortably restful sleep. Having the right bedding is essential. High quality natural sourced materials and processed in a safe environment.
Height80 Inches
Length76 Inches
Width3 Inches
ModelCoconut Coir Topper

10. Sweetnight


Sweetnight 4 Inch California King Mattress Topper, High Density Memory Foam Mattress Topper for Enhanced Support, Medium Firm Mattress Topper with Non-Slip Design, Cal King Size

Sweetnight #ad - Another bonus is that the mesh backing allows airflow and absorbs heat from your body. Just-right support - a mattress that is too soft or too firm may lead to an uncomfortable sleep. Your medium-firm mattress topper, cradles your body and properly align your spine, which is made of high density gel-infused memory foam, preventing too much sinkage.

Extend mattress life - your foam mattress topper not only provides a perfect balance between body support and softness, protects it from dust and dirt, but also slows down the wear on your mattress, and prolongs its service life. Additionally, the adjustable elastic straps help to keep the topper securely on the mattress and prevent it from moving when twisting or turning over at night. If you have any problems or questions with your mattress topper, we’re here to help you out.

Worry-free warranty - all sweetnight foam mattress toppers are backed with a hassle-free 5-year warranty, offering a 30-night trial. Double anti-slip & not easy to move - the mesh fabric backing increases friction and holds your california king mattress topper in place. Soft touch & airfow - made of skin-friendly fabric, the knitted cover of your memory foam mattress topper provides softer touch and more luxurious sleep experience.
BrandSweetnight #ad
ManufacturerSweetnight #ad
Height4 Inches
Length84 Inches
Width72 Inches
Part NumberSN-M03501-4-CLK