Split King Mattress/Box Spring Encasement 39ft x 80ft - Waterproof

In this review of the Split King Mattress/Box Spring Encasement 39' x 80' the bottom line is simple: it is a practical, no-frills solution for anyone who needs complete mattress protection. The product's single biggest reason to buy is the six sided zippered design with a Velcro zipper seal, which truly seals out liquids, dust and pests and makes it much easier to protect a split king mattress or box spring. For households with pets, children, or allergy sufferers this encasement provides obvious peace of mind without sacrificing comfort.

Key Features

• Six sided zippered encasement: The full wraparound zipper and Velcro seal fully encase mattress or box spring surfaces to block pests and dust.
• Waterproof lining: A polyurethane inner layer prevents liquids and moisture from penetrating into mattress layers, protecting against spills and accidents.
• Hypoallergenic construction: The impenetrable cover helps reduce exposure to allergens so allergy sufferers can breathe easier while sleeping.
• Soft, breathable fabric: The polyester surface is stretchable and designed to be quiet under sheets, maintaining comfort without crinkling noises.
• Durable and machine washable: Built from polyester and polyurethane for lasting use, the encasement is easy to clean in a washing machine.

Who It's For

This encasement is best for owners of split king mattresses or matching box springs who want comprehensive protection from spills, bed bugs, dust and pet-related wear. It fits mattresses 8' to 11' deep and is especially useful for families with kids or pets and for people who need allergy relief.

Shoppers who want a fitted topper rather than a full encasement or who need custom depths outside the 8' to 11' range should look elsewhere. Also, buyers seeking a waterproof pad with a quilted sleeping surface will prefer a different style of protector.

Pros & Cons

Pros

• Six sided zippered design with Velcro seal provides complete containment and pest protection.
• Waterproof polyurethane lining reliably blocks liquids from reaching mattress layers.
• Stretchable, soft polyester surface remains quiet and comfortable under sheets.
• Machine washable construction makes upkeep simple and supports long-term use.

Cons

• Zipper quality has mixed feedback from customers, so careful handling is advisable to avoid issues.
• The full encasement style is less convenient if you only need a top-layer protector for breathability and minimal feel.

Specifications

Product type	Six sided zippered mattress and box spring encasement
Fits mattress size	Split King 39' x 80'
Depth compatibility	Fits mattresses 8' to 11' deep
Outer material	Polyester surface
Inner lining	Polyurethane waterproof layer
Care	Machine washable
Closure	Full zipper with Velcro zipper seal

Our Verdict

The Split King encasement is a sensible, well-made option for anyone who needs complete mattress and box spring protection. Its waterproof polyurethane lining, quiet polyester surface and full zipper seal make it good value for households with kids, pets or allergy concerns, though users should handle the zipper carefully and choose a different product if they only want a thin top protector.

Frequently Asked Questions

Will this fit split king mattresses of varying depths?
Yes, it is designed to fit mattresses and box springs that are between 8' and 11' deep.

Is the encasement comfortable to sleep on?
The stretchable polyester surface is soft and designed to be breathable and noiseless, so it should not affect sleep comfort under sheets.

Can I wash the encasement in a machine?
Yes, the cover is machine washable for easy cleaning and long-term use.