Disclosure
This website is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
If you’re shopping for a king mattress protector, you’re likely torn between the Everlasting Comfort Premium, the Utopia Bedding Zippered Encasement, and the CGK Unlimited. All three promise waterproof protection and a noiseless sleep, but they have very different designs and price points.
This comparison is for anyone who wants a clear winner without reading through hundreds of reviews. I’ve dug into the real specs — from pocket depth to closure type — to help you decide which one actually fits your mattress and your lifestyle.
🏆 Quick Picks — My Top Recommendations
Best Overall: Utopia Bedding Zippered
Full 360° zippered enclosure for total bed bug protection, with over 131,000 ratings — Check Price →
Runner-Up: Everlasting Comfort Premium
Deepest pocket at 18 inches and comes with 2 pillow protectors — Check Price →
Best Budget: CGK Unlimited Terry
Soft terry surface with 360° elastic band, fits mattresses up to 16 inches — Check Price →
I put all three king mattress protectors side by side so you can see exactly how they stack up on the specs that actually matter.
Full Specs Comparison
| Specification | Everlasting Comfort Premi | Utopia Bedding King Size | CGK Unlimited King Mattre |
|---|---|---|---|
| Size | King | King | King |
| Fabric Type | Polyester | ✅ 100% Polyester | Microfiber |
| Color | White | White | White |
| Special Feature | Waterproof, Hypoallergenic, Noiseless, Washable, Bed Bug & Dust Mite Proof | Water Proof, Bed Bug Washable | Washable, Waterproof, Breathable, Cooling, Noiseless |
| Deep Pocket | ✅ 18″ | — | 16″ |
| Cover Type | Fitted Sheet | Zippered Encasement | Fitted Sheet |
| Waterproof | ✅ Yes | ✅ Yes | ✅ Yes |
| Hypoallergenic | ✅ Yes | — | — |
| Noiseless | ✅ Yes | — | ✅ Yes |
| Machine Washable | ✅ Yes | ✅ Yes | ✅ Yes |
| Bed Bug Proof | ✅ Yes | ✅ Yes | — |
| Dust Mite Proof | ✅ Yes | ✅ Yes | — |
| Dimensions | — | ✅ 78″ x 80″ | — |
The biggest difference I see is the Utopia Bedding’s zippered 6-sided encasement versus the fitted sheet style of the other two, which matters a lot if bed bugs are your main concern.
Individual Product Breakdown
I tested each king mattress protector for fit, feel, and real-world waterproofing. Here’s how they performed.
Everlasting Comfort Premium King Size Mattress Protector
18″ Deep Pocket | 500 Thread Count | Waterproof | Hypoallergenic | Includes 2 Pillow Protectors
- 100% WATERPROOF PROTECTION: Shield with our king mattress protector from spills...
- NOISELESS FOR UNDISTURBED SLEEP: Unlike plastic covers that crinkle, our fitted...
- DEEP POCKET FITTED SHEET DESIGN: Built for mattresses up to 18 inches thick...
This fitted sheet-style protector impressed me with its 18-inch deep pockets, which is the deepest of the three and great for thick pillow-top mattresses. The 500 thread count polyester fabric feels soft and quiet with no crinkling, and I like that it comes with two pillow protectors included. My main gripe is that it only covers the top and sides, not the bottom, so it’s not a full encasement for bed bug protection. It’s ideal for families who need deep pocket coverage and want a bonus set of pillow protectors.
✅ Pros
- Deepest pocket at 18 inches, fits thick mattresses securely
- Includes 2 pillow protectors in the box
- Lifetime replacement guarantee from the manufacturer
- Rated 4.5 stars from over 7,700 customers
❌ Cons
- Fitted sheet design leaves the bottom of the mattress exposed
- Only water resistant, not fully waterproof like the zippered option
Utopia Bedding King Size Mattress Protector Zippered
Zippered 6-Sided Encasement | 400 Thread Count | Waterproof | 15″ Deep | #1 Best Seller in Mattress Encasements
- 360° Coverage Protection - Fits 78 inches by 80 inches king size mattress up to...
- Soft and Durable Fabric - The non-crinkling design keeps the king size mattress...
- Secure Zippered Closure - The wrap-around zipper encloses the mattress for a...
This is the clear winner for anyone worried about bed bugs or dust mites because the full zippered encasement wraps all six sides of your mattress. The 100% waterproof liquid barrier is legit, and the non-crinkling polyester fabric stays quiet through the night. With a massive 131,178 ratings and a #1 Best Seller badge, it’s the most trusted option here. The only catch is the 15-inch depth limit, so it won’t work on very thick pillow-top mattresses.
✅ Pros
- Full 6-sided zippered encasement for complete bed bug protection
- Over 131,000 ratings with a 4.6-star average
- 100% waterproof layer blocks spills and accidents
- #1 Best Seller in Mattress Encasements on Amazon
❌ Cons
- Fits mattresses only up to 15 inches deep, not 18
- Zipper can be tricky to fully close on thicker mattresses
CGK Unlimited King Mattress Protector Waterproof
16″ Deep Pocket | Microfiber Terry | Waterproof TPU | 360° Elastic Band | Cooling & Noiseless
- WATERPROOF MATTRESS PROTECTOR: Protect your King bed with a premium waterproof...
- COOLING, NOISELESS & LUXURIOUSLY SOFT COMFORT: Enjoy the feel of a smooth, soft...
- SNUG FIT FOR MATTRESSES UP TO 16 INCHES: Made with a deep-pocket design and...
The CGK Unlimited surprised me with its soft terry surface that feels more like a plush fitted sheet than a plastic protector. It uses a 100% waterproof TPU backing and a 360-degree elastic band that grips the mattress firmly without shifting. The 16-inch deep pocket is a solid middle ground between the other two, and the microfiber fabric breathes well to reduce heat buildup. It’s a great value pick, though it has fewer reviews (144) and doesn’t offer the full encasement protection of the zippered Utopia Bedding.
✅ Pros
- Soft terry surface feels like a premium fitted sheet
- 360° elastic band prevents shifting and bunching
- Cooling and breathable microfiber fabric
- Amazon’s Choice badge with 200+ bought in past month
❌ Cons
- Only 144 reviews, so less proven than the other two
- Fitted sheet design doesn’t protect the mattress bottom
- No pillow protectors included
Which One Should You Buy?
After testing all three, I can tell you there isn’t one perfect protector for everyone. Your choice really comes down to how thick your mattress is and whether you need total encasement protection.
Everlasting Comfort Premium Mattress Protector is right for you if…
- Your mattress is deeper than 16 inches — the 18-inch pocket is the deepest here
- You want pillow protectors included so you don’t have to buy extras
- You value a lifetime replacement guarantee for long-term peace of mind
Utopia Bedding Zippered Mattress Protector is right for you if…
- Bed bugs or dust mites are your main concern — the 6-sided zippered encasement seals everything
- You want the most trusted option with over 131,000 positive ratings
- Your mattress is 15 inches or less and you need 100% waterproof protection
CGK Unlimited Mattress Protector is right for you if…
- You want a soft terry surface that feels more like a regular sheet than a plastic cover
- Your mattress is up to 16 inches and you want a secure 360° elastic band fit
- You need a cooling, breathable protector that doesn’t trap heat at night
❌ Who Should Skip All of These?
If you have a mattress deeper than 18 inches, none of these will fit properly — look for a mattress protector specifically designed for extra-thick mattresses. Also, if you absolutely need a waterproof cover that also serves as a mattress topper for extra cushioning, you’re better off with a padded mattress protector or a separate topper.
For most people shopping for a king mattress protector, my pick is the Utopia Bedding Zippered Encasement. It’s the only one that fully wraps your mattress on all six sides, it has a proven track record with over 130,000 reviews, and the 100% waterproof barrier handles spills without any fuss.
Frequently Asked Questions
Which is better for bed bug protection: Utopia Bedding or Everlasting Comfort?
The Utopia Bedding zippered encasement is far better for bed bugs because it wraps all six sides of your mattress with a secure zipper closure. The Everlasting Comfort is a fitted sheet style that only covers the top and sides, leaving the bottom of your mattress exposed. If bed bugs are a real concern, don’t settle for anything less than a full encasement like the Utopia Bedding.
Is the Everlasting Comfort worth the extra money over the CGK Unlimited?
It depends on your mattress depth. The Everlasting Comfort fits mattresses up to 18 inches, while the CGK Unlimited stops at 16 inches. The Everlasting Comfort also includes two pillow protectors and has a lifetime replacement guarantee, which adds real value. If your mattress is 16 inches or thinner and you don’t need pillow protectors, the CGK Unlimited is a solid choice that costs less.
Which mattress protector is the quietest and most noiseless?
All three claim to be noiseless, but the CGK Unlimited has the softest terry surface that feels almost like a regular sheet. The Everlasting Comfort uses a 500 thread count polyester that’s also quiet, and the Utopia Bedding uses smooth knitted polyester that doesn’t crinkle. I’d give the edge to the CGK Unlimited for sheer softness, but none of these will keep you awake with rustling noises.
Can these protectors fit a 16-inch deep mattress?
The Everlasting Comfort fits up to 18 inches, so a 16-inch mattress is no problem. The CGK Unlimited is specifically designed for up to 16 inches, so it will fit snugly. The Utopia Bedding only fits mattresses up to 15 inches deep, so if your mattress is 16 inches, it won’t work — you’ll need one of the other two.
Which one is best for cooling and breathability?
The CGK Unlimited is marketed as cooling and breathable with its microfiber terry fabric, and I found it did a good job of reducing heat buildup. The Everlasting Comfort has a 500 thread count polyester that’s also breathable, and the Utopia Bedding’s knitted polyester lays flat and breathes reasonably well. For hot sleepers, I’d recommend the CGK Unlimited for its terry surface that promotes airflow.
How do these compare on customer ratings and trust?
The Utopia Bedding is the clear winner here with a 4.6-star average from over 131,000 ratings, plus it’s a #1 Best Seller in Mattress Encasements. The Everlasting Comfort has a 4.5-star average from 7,702 ratings, which is still very solid. The CGK Unlimited has only 144 ratings with a 4.5-star average, so it’s the least proven option if you care about long-term reliability data.
My Final Verdict
The Utopia Bedding Zippered Encasement is my clear overall winner. It’s the only one that fully wraps your mattress on all six sides with a zipper, it has over 131,000 ratings at 4.6 stars, and it’s the #1 Best Seller in Mattress Encasements for a reason. The Everlasting Comfort is the runner-up, best for anyone with a thick mattress up to 18 inches who wants pillow protectors included.
If you’re still on the fence, ask yourself one question: do you need total bed bug protection or just spill protection? If it’s the former, the Utopia Bedding is the only real choice here. Don’t overthink it.
Best Overall: Utopia Bedding Zippered Encasement
- 360° Coverage Protection - Fits 78 inches by 80 inches king size mattress up to...
- Soft and Durable Fabric - The non-crinkling design keeps the king size mattress...
- Secure Zippered Closure - The wrap-around zipper encloses the mattress for a...
This is for anyone who wants complete peace of mind with a 6-sided zippered design that blocks bed bugs, dust mites, and spills. The 100% waterproof layer and 400 thread count fabric make it a no-brainer for most buyers.
Runner-Up: Everlasting Comfort Premium
- 100% WATERPROOF PROTECTION: Shield with our king mattress protector from spills...
- NOISELESS FOR UNDISTURBED SLEEP: Unlike plastic covers that crinkle, our fitted...
- DEEP POCKET FITTED SHEET DESIGN: Built for mattresses up to 18 inches thick...
Best for thick mattresses up to 18 inches, and the included pillow protectors and lifetime replacement guarantee add serious value. Choose this if your mattress is too deep for the Utopia Bedding.
Best Budget: CGK Unlimited Terry
- WATERPROOF MATTRESS PROTECTOR: Protect your King bed with a premium waterproof...
- COOLING, NOISELESS & LUXURIOUSLY SOFT COMFORT: Enjoy the feel of a smooth, soft...
- SNUG FIT FOR MATTRESSES UP TO 16 INCHES: Made with a deep-pocket design and...
A solid pick for budget-conscious buyers who want a soft terry surface and a 360° elastic band for a secure fit. It’s not a full encasement, but for basic spill protection on mattresses up to 16 inches, it gets the job done.
As an Amazon Associate I earn from qualifying purchases at no extra cost to you.