Best California King Size Mattresses Toppers of 2025

The VALUXE Gel Memory Foam Topper is a high-density mattress topper designed to improve your sleep quality. Made of 40D high-density memory foam and gel beads, it provides excellent support while maintaining breathability. The 3-inch thickness conforms to your body curve, offering support and relieving pressure points. The CertiPUR-US certified foam ensures safety and durability. The bamboo fiber cover is not only skin-friendly and breathable but also removable and washable. With adjustable elastic straps and an anti-slip surface backing, it stays securely in place. The VALUXE Gel Memory Foam Topper is available in California King size and comes with a 10-year warranty.

The WhatsBedding Memory Foam Topper offers a plush sleeping experience with its shredded memory foam design. This unique filling provides excellent support while ensuring breathability, helping you enjoy a restful night without overheating. The elastic straps keep the topper securely in place, no matter how much you move during sleep. Additionally, the baffle box design enhances airflow and keeps the foam evenly distributed, preventing any uncomfortable lumps or shifts. With this topper, you can soften a too-firm mattress and wake up feeling refreshed.

The Aivermeil Mattress Topper features a unique dual-layer design, combining a 2-inch gel-infused memory foam layer with a plush 2-inch pillow top. This innovative structure enhances your sleep quality by providing both cooling comfort and pressure relief. The skin-friendly polyester fabric ensures a soft touch, while the gel technology helps regulate temperature, keeping you cool throughout the night. Additionally, the 4-inch thickness supports your body’s natural alignment, alleviating pressure on key areas like your shoulders and back. With its deep pocket design, this topper fits securely on various mattress sizes, making it easy to maintain a cozy sleeping environment.

Upgrade your sleep experience with the Sleep Innovations Memory Foam Topper. This plush California King Size topper features two layers of cool cloudlike comfort, including 3 inches of gel memory foam and a 1-inch pillow top cover. By adding this topper to your mattress, you can instantly improve its comfort and support. The gel memory foam relieves pressure points, allowing you to enjoy deeper sleep and wake up feeling refreshed. The removable, washable pillow-like cover stretches to fit your bed like a fitted sheet, providing an all-over soft plush feel. Made in the USA and CertiPUR-US certified, this topper is hypoallergenic and offers high-quality materials for high-quality sleep. Plus, it comes with a 10-year warranty, demonstrating the brand's commitment to great sleep.

MATBEBY Cal King Topper is an extra thick and supportive mattress topper designed to provide exceptional comfort and thickness. It is overfilled with 1000GSM 3D snow down alternative fiber, ensuring ample support for your body. The unique three-dimensional baffle box stitching prevents the filling from moving, so you wake up feeling fully refreshed each morning. With its breathable and comfortable cloud-like surface, this topper allows for air circulation, keeping you cool without the heat and sweat of memory foam or traditional mattresses. The 8"-21" elastic deep pocket and no-slip back design ensure a secure fit, allowing you to toss and turn freely during sleep. Cleaning is a breeze as it is machine washable. With its certified and tested materials, along with exceptional customer service, MATBEBY Cal King Topper is a great choice for a fresh and hygienic sleep experience.

The Bedsure Breescape Mattress Topper is designed to enhance your sleep experience with its unique features. The blend of firm and soft fibers provides just the right support, making your mattress feel luxuriously plush. Its temperature-regulating fabric ensures you stay comfortable, releasing heat when you're warm and trapping it when you're cold. This topper is crafted from an ultra-soft cooling material that feels gentle against your skin, helping you unwind after a long day. Plus, with a deep pocket design that fits mattresses from 8 to 21 inches, you won’t have to worry about it shifting during the night.

The VALUXE Memory Foam Topper features a versatile two-layer design that includes a 2-inch cooling gel memory foam base and a 1-inch down alternative pillow top. This combination allows you to customize your comfort by using them together or separately based on your preference. The upper mattress pad includes deep elastic pockets, ensuring a snug fit on mattresses ranging from 8 to 21 inches deep, preventing any slipping during the night. Additionally, this topper is made with certified foam and fabric, ensuring it is safe for your skin and free from harmful chemicals. Cleaning is made easy as the mattress pad can be removed and machine washed.

The PATSBA Mattress Topper is designed to enhance your sleep experience with its plush 1200GSM microfiber filling, offering softness and comfort while providing essential support for your shoulders and hips. Made with a combination of 40% bamboo viscose and 60% polyester, this topper promotes breathability to help keep you cool and comfortable throughout the night. Its deep elastic pockets ensure a snug fit on mattresses ranging from 8 to 21 inches, preventing any slipping. Plus, maintaining this topper is a breeze—just toss it in the washing machine for easy cleaning.

Experience a more comfortable sleep with the Lucid 3 Inch Gel Infused Memory Foam Mattress Topper. The plush, airy, and responsive memory foam enhances your mattress and provides a soft sleeping surface. The gel infusion regulates body temperature and dissipates heat, perfect for those who sleep hot. The ventilated design allows constant airflow, ensuring a cool sleeping environment. Protect your mattress topper with a waterproof cover and enjoy the easy-to-ship design that requires no assembly.

The ABENE Mattress Topper features a unique double layer design that combines a 2-inch cooling gel-infused memory foam with a plush 1-inch down alternative pad. This combination offers exceptional comfort, making you feel like you’re sleeping on a cloud. It effectively conforms to your body’s shape, helping to relieve pressure points and improve your sleep quality. The breathable fabric keeps you cool throughout the night, while the thoughtful bedside pocket provides convenient storage for your essentials. With this topper, you can transform your old mattress into a luxurious sleeping surface.