4D Air California King Mattress Protector 100% Waterproof - Cooling

In this review the 4D Air California King mattress protector is judged as a practical, protective addition for anyone who wants to keep a deep mattress clean without sacrificing comfort. The single biggest reason to buy is its combination of a fully waterproof TPU backing and a breathable, noiseless 3D air fabric fill that preserves mattress feel while protecting against spills, sweat and pet accidents. It feels soft to the touch, fits extra deep mattresses, and aims to deliver a quiet, cooling sleeping surface rather than a plastic-sheened cover.

Key Features

• 100% Waterproof: A TPU backing creates an invisible waterproof barrier that repels liquids and bodily fluids to protect the mattress beneath.
• OEKO-TEX Certified: The cover is Standard 100 by OEKO-TEX certified, which reduces concern about harmful chemicals or strong odors.
• Cooling and Breathable: The surface fabric wicks moisture and is described as more breathable and softer than cotton terry and common polyester options.
• Sleep in Silence: The 3D Air Fabric filling has ultra-fine ventilation holes to allow airflow while avoiding crinkling or plastic sounds when you move.
• Extra Deep Fit: A highly elastic fitted-sheet style skirt stretches to fit mattresses from 8 to 21 in thick so it stays put on memory foam, latex or spring mattresses.
• Machine Washable: The protector is washable on a gentle cycle and can be tumble dried low, making maintenance straightforward.

Who It's For

This protector is a good match for households with children or pets, anyone with a deep mattress up to 21 in, and sleepers who want mattress protection without a noisy, plastic feel. It suits people who value breathability and a softer fabric surface while keeping the mattress sealed against spills and stains.

It may be less appropriate for buyers who want a quilted, thick mattress topper that adds significant loft or those who prefer natural-only materials without any TPU waterproof layer. If extreme temperature regulation is critical, shoppers should note that this is a breathable protector but not a temperature-control mattress topper.

Pros & Cons

Pros

• Effectively waterproof with an invisible TPU barrier to protect against spills and accidents.
• Soft, moisture-wicking surface that feels more breathable than many terry or polyester covers.
• Quiet 3D Air Fabric filling avoids crinkling and maintains a natural sleep feel.
• Fitted skirt fits mattresses from 8 to 21 in and stays secure without slipping.

Cons

• Contains a TPU backer, so buyers seeking a purely natural material construction should look elsewhere.
• The cooling effect is noticeable to some customers but not a substitute for a dedicated cooling mattress or topper.

Specifications

Product type	Mattress protector / pad cover
Size	California King 72in x 84in
Waterproof backing	Top TPU invisible waterproof layer
Fit depth	Fits 8-21in mattresses (extra deep pocket)
Fill material	3D Air Fabric with ultra-fine ventilation holes
Care	Machine wash cold gentle; tumble dry low; do not bleach
Certification	Standard 100 by OEKO-TEX

Our Verdict

The 4D Air California King mattress protector is a sensible buy for anyone who needs strong, noiseless waterproof protection for a deep mattress while keeping a soft, breathable sleeping surface. It balances protection and comfort well, is easy to care for, and represents good value for households with kids, pets or people prone to spills.

Frequently Asked Questions

Is this protector noisy like vinyl?
Answer. No, the 3D Air Fabric filling is designed to be quiet and avoids the crinkling sound associated with many vinyl-backed covers.

Will it fit my 16 in memory foam mattress?
Answer. Yes, the fitted skirt stretches to fit mattresses from 8 to 21 in, including memory foam and latex models.

Can I machine wash it?
Answer. Yes, wash cold on a gentle cycle and tumble dry low; do not bleach or dry clean.