Best California King Size Mattress Protectors of 2026

The Springspirit Waterproof Protector is designed for ultimate comfort and protection. Its ultra-soft terry fabric feels gentle against your skin, while the waterproof backing safeguards your mattress from spills and stains, making it ideal for families with children or pets. The strong elastic ensures a snug fit on various mattress sizes, so you won’t have to worry about it slipping off. Plus, it’s machine washable, allowing for easy maintenance. Having a couple of these protectors on hand means you’ll always have a clean option ready when accidents happen.

The SPRINGSPIRIT Waterproof Mattress Protector offers a quiet and gentle surface that helps keep you cool and comfortable throughout the night. Its waterproof layer safeguards your mattress from spills, stains, and accidents, making it ideal for those who want to protect their bedding investment. Designed to fit a wide range of mattress sizes up to 14 inches deep, it’s easy to put on and stays securely in place. Plus, it’s simple to clean—just toss it in the washing machine and tumble dry on low. This protector combines comfort, protection, and convenience to enhance your sleeping experience.

The Moonsea Waterproof Mattress Protector offers a soft, breathable surface made from polyester to keep you comfortable as air flows through, reducing odors and keeping your sleep fresh. Its waterproof backing shields your mattress from spills, sweat, and stains, so you don’t have to worry about damage. The noiseless TPU layer means you won’t hear any crinkling sounds while you rest, allowing for a peaceful night. Plus, the stretchy elastic skirt fits mattresses between 5 to 18 inches deep, hugging every corner snugly to prevent slipping. This protector is also easy to remove and machine washable, making maintenance simple and hassle-free.

The Moonsea Twin XL Protector is designed for your comfort and peace of mind. Its ultra-soft bamboo terry fabric not only feels gentle against your skin but also helps keep you cool throughout the night. With a noiseless and waterproof backing, this protector safeguards your mattress from spills and accidents, extending its lifespan. The strong elastic ensures a snug fit, preventing any slipping or bunching, while accommodating mattresses up to 14 inches high. Plus, it's machine washable, making maintenance a breeze. Enjoy a restful sleep knowing your mattress is well protected.

MATTSHIELD Organic Mattress Protector is the ultimate mattress protection solution for a comfortable and healthy sleep experience. Made with premium 100% organic cotton fabric, it offers optimal comfort and is certified by OEKO-TEX for its skin-friendly properties. The 200 GSM organic cotton surface is not only breathable but also waterproof, providing protection against spills, stains, and dust. With its fitted sheet-style design and deep pockets, it easily fits mattresses up to 18 inches deep. The stretch-knit design ensures a snug fit without bunching or slipping. This hypoallergenic mattress protector is perfect for those with sensitivities or sensitive skin, as the breathable material allows air to circulate, keeping you cool and comfortable all night long. Cleaning is a breeze, as it is machine washable and can be tumble dried on low heat. The stain-resistant TPU membrane acts as a barrier against stains and dust, making it ideal for families with children or pets. Enjoy a peaceful and quiet night's sleep with this premium mattress protector that is made without plastic, latex, PVC, phthalates, or noisy PVC vinyl.