The best protection for your mattresses!

★★★★★  10000+ Customer Reviews

  • 100% Waterproof barrier

  • 100% Safe Polyurethane

  • Hypoallergenic cotton terry top plus hi-tech backing

  • Completely noiseless

  • Machine washable

🛒 ​Stock is Limited: 3,247+ sold out of 4,000 units available!


“We bought this before a visit from a family with a special needs child and were concerned about our brand-new king mattress possible being wetted. A friend who owns a bed store recommended this product to use, and we couldn’t be happier. I was worried it would be hot or plastic feeling, but not at all! Just a nice, soft cotton feel and major bonus – it’s machine washable! Our original intent was to remove it after the guests leave. However, it’s a perfect protector for our expensive mattress so it will stay on. We plan to buy another for our king mattress in our bedroom. A great purchase, we are very happy!”

Save your mattress. Save your sleep!

The bed isn’t just a piece of furniture. It’s the place where you want to enjoy a restful night’s sleep after a long day of work. And we are sure you already know how important it is for the mattress to be of high-quality. But more than that, protecting it is essential! Now you can take care of it and make it even more comfortable with a five-star Waterproof Mattress Protector. Save your mattress and get to know the ideal sleep!

Advanced Technology

It allows the waterproof barrier to breathe while the soft cotton terry surface wicks away moisture helping to keep you keep cooler and sleep better.

100% Waterproof Barrier

UltraBlock Waterproof Mattress Protector is the only mattress protector to pass the 100-gallon flood test! Get peace of mind knowing your mattress is protected from liquids, accidents and more.


Keep you and your family safe from dust mites, mold, mildew, and other allergens. OurWaterproof Mattress Protector Comfortable is created only from high-quality materials, it does not contain PVC's, phthalates, or vinyl, and it has a soft cotton terry surface.

Why should you choose UltraBlock Waterproof Mattress Protector?

We perfectly understand your needs. We’ve been there. We know what it means to have a ruined day because of a poor night’s sleep. Waking up rested, full of life and energy, is a critical part of a healthy life. It’s time to rest and make sleep yours with UltraBlockWaterproof MattressProtector.

We’ve used the best technology. Made with superior materials. Made to protect you and your family. 

Put your head on the mattress, feel the soft touch and sleep in complete peace.

Your happiness is our top priority. That’s why our responsive customer service team is fully committed to ensuring you have the best experience possible. We are here for you! Don’t hesitate to contact us. 

30 Day Money-Back Guarantee It Works or You Don't Pay

We want you to be 100% satisfied with everything you buy from UltraBlock. And if you’re not entirely happy with your purchase we will refund your money in full, or exchange the goods. All we ask is that you contact our customer services and then return the product back to us.

The benefits of using UltraBlock



100% waterproof

100% Cotton terry surface

Extremely quiet with no crinkling



Might trigger some allergies

Do not stop from leaking through

Give a plastic feeling

Noisy when tossing and turning

Difficult to wash

The internet’s favorite Mattress Protector

Don’t just take it from us...

"I always thought having a mattress protectors would be like sleeping on a sheet of plastic -- hot and crinkly. 

This one has a soft upper layer, kind of like a thin terry towel. I don't really know HOW it stops moisture leakage, 

but it is definitely NOT like a sheet of plastic. We had a cat with some issues, which is why we bought moisture protection for our beds -- and they work wonderfully! ALL of the cat pee stayed on the sheet & the 

mattress protector -- absolutely nothing seeped thru to the mattress. 

Lori M.


"This thing was a bombshell discovery trying to potty train my mentally challenged pup, 

it took a lot and never once seeped through. If you're looking for a solution to a dog 

that can't hold it, this is it. I started putting a 2nd sheet underneath it so I could just peel 

the bed and throw it all in the washer. Best investment you can make for your mattress."

Luke Miller


"Unlike other so called water proof mattress covers, this one truly is waterproof. For the past 12 months, it has been great."

Nancy B.


Amy B.

I have tried other mattress pads in the past. Some were quilted and were too bulky. Others had sides that ripped easy when you tried to put them over the corners. Some were noisy. Some were hot. This one is excellent. I am amazed. It does not generate extra heat. It is soft but not bulky. It actually feels like there isn’t a mattress pad. It is very comfortable. It is the best mattress we have ever used.

The like reaction.The love reaction.
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Erica F.

I bought this for two reasons, my 5 year old and my dogs. If it isn’t one it’s the other with my family making a mess. I have hade spills from my daughter & I have allergies which this can control. It’s a fitted sheet, after opening you need to shake it well to get the little loose fabrics off (doesn’t affect the product) I have three other people I know who have gotten this and they love it so I gave it a try.

The like reaction.The love reaction.
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Jen R.

This mattress cover is a dream come true! It makes our plush mattress even more cozy, and now feels like we’re sleeping on a cloud. The cover is so soft and comfortable to sleep on, and is much better than I ever could have imagined! It’s perfect!!! Who would have thought a little mattress cover would make such a big difference?! My husband, baby and myself all sleep perfectly with this amazing new addition to our sleeping arrangements :) Thank you for this incredible product!!!

The like reaction.The wow reaction.The love reaction.
Like ·Reply · 3h
Eva D.

I’m honestly so happy I bought this mattress protector. My puppy was having accidents every night on my new mattress. I spent so much time cleaning up the mess to make sure all the stains were removed. I was ready for a change! I compared different mattress protectors online, and it seemed like this was the best choice. After having it for a month, I can honestly recommend this mattress protector because it’s not like any other mattress protectors that I’ve seen. It is very soft and it doesn’t make a crinkly sound. I love the fact that the sheets do not slip off. The same night I put this on my mattress, my dog decided she wanted to mark her territory all over it. It was very easy to clean up and it did not leak through. If you are looking for a comfortable mattress protector that’s affordable, then this one is the one for you!

The like reaction.The wow reaction.
Like ·Reply · 1d

Money back guarantee

UltraPlush™ Mattress Protector Twin Size



What material is the lining made out of?

The outside is cotton terry. The inside lining is polyurethane, which is the industry standard for waterproof protectors. This soft breathable inner lining allows air to pass through but not liquids.

Is this cover washable?

FITTED SHEET STYLE COVER is MACHINE WASHABLE. Strong, tight fitting elastic secures cover to stay in place - will not slip or bunch up.

Does it sleep warm?

You don't even know it's on the mattress, it's like an extra fitted sheet and no it does not sleep warm.

Does this fit a 8 inch mattress?

Yes it does. Stretchable DEEP POCKET SKIRT fits today’s thicker mattresses up to 18” thick and is designed to make it easy to put on and take off.

Is it water proof?

"Yes it is 100% WATERPROOF. Get peace of mind knowing your mattress is protected from liquids, spills, urine, accidents and more. Extremely quiet with NO CRINKLING, making it MORE COMFORTABLE."

Do I get any warranty?

20 year manufacturing defect warranty from date of purchase. We stand by and believe in our products 100%! If you have any problems, contact us and we will offer you a full refund or replacement!