Bed Bug-Proof Mattress Cover King Size Ultimate 3-Piece Kit - Total

In this review of the MATTSHIELD New Ultimate 3-Piece Kit the bottom line is simple: this kit is best for anyone who wants complete, long-term protection for a king mattress with a comfortable cotton surface. The set includes a zippered king mattress encasement plus two queen pillow encasements and is aimed at households that need both bed bug-proofing and waterproof protection. The reviewer found the terry cotton top comfortable, the six-sided waterproofing reassuring, and the fit secure on mattresses between 12 and 17 in thick, making it a practical choice for many bedroom setups.

Key Features

• Complete kit: The three-piece set includes a king mattress encasement and two queen pillow encasements so pillows and mattress are protected together.
• Six-sided waterproofing: A 100% waterproof encasement covers all six sides to block spills and stains and preserve the mattress surface.
• Skin-friendly cotton surface: The terry cotton top feels soft against the skin and helps with breathability for more comfortable sleep.
• Deep pocket fit: Designed for mattresses 12 to 17 in thick so the zippered encasement fits snugly on many modern mattress depths.
• Machine washable: The materials are easy to care for in a washing machine, which keeps the encasements fresh without special treatment.

Who It's For

People who want a straightforward, no-nonsense mattress protection system that handles both bed bugs and liquid accidents will appreciate this kit. It is especially useful for homes with thicker mattresses, shared bedrooms, guest rooms, or anyone looking to protect an investment mattress while keeping a soft cotton sleeping surface.

Those seeking a featherweight, thin protector for a low-profile mattress or a non-zippered, fitted-only pad should look elsewhere; this is an encasement intended to be used under sheets and fully zipped for total coverage rather than a thin mattress pad for added comfort only.

Pros & Cons

Pros

• High-quality terry cotton surface that feels comfortable against skin while remaining breathable.
• Full six-sided waterproof barrier protects mattress from spills, stains, and accidents.
• Good fit for thick mattresses (12 to 17 in) and includes pillow encasements for complete coverage.
• Machine washable for easy maintenance and long-term use.

Cons

• Zipper closure receives mixed feedback from users; some find it tight while others find it less smooth, so zipper handling can be hit-or-miss.
• The encasement is designed to be used under sheets, so it adds bulk compared with a slim protector.

Specifications

Kit contents	1 king mattress encasement + 2 queen pillow encasements
Fits mattress depth	12 to 17 in
King dimensions	76 in x 80 in (193 x 203.5 cm)
Top fabric	100% terry cotton surface
Waterproof coverage	6-sided, 100% waterproof
Care	Machine washable
Warranty	Lifetime warranty

Our Verdict

The MATTSHIELD Ultimate 3-Piece Kit is a solid choice for buyers who prioritize full encasement protection and a comfortable cotton surface. It delivers reliable six-sided waterproofing and a deep-pocket fit for thick mattresses, plus pillow covers for complete coverage, making it a good value for anyone protecting a king mattress from bed bugs, spills, and everyday wear.

Frequently Asked Questions

Will this fit a 14 in mattress?
Yes. The encasement is designed to fit mattresses from 12 to 17 in thick, so a 14 in mattress will be within the recommended range.

Can I use the encasement without sheets?
The product is intended to be used under fitted sheets for best comfort and to preserve the waterproof layer, though it can function without them if preferred.

Are the pillow encasements zippered?
Yes, the two queen pillow encasements included in the kit feature zippered closures for full protection.