Mainstays Soft Terry Waterproof Fitted Mattress Protector, California King
- Brand:
- Mainstays
- Model Number:
- MS4300777091-36
- UPC:
- 010482397369
- EAN:
- 0010482397369
- Walmart SKU:
- 2846186117
Steady $30.94 pricing maintained for 90 days straight, matching typical levels. Market shows no signs of promotional activity.
| Price Type | Price | Date |
|---|---|---|
|
Highest Price
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$30.94 | |
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Lowest Price
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$30.94 | |
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Most Recent Price
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$30.94 |
Tracking History: We have tracked Mainstays Soft Terry Waterproof Fitted Mattress Protector, California King since 6/28/2025. The most recent price update was on Jun 10, 2026.
Price Range: Over the past 90 days, the price has ranged from $30.94 (lowest on 6/28/2025) to $30.94 (highest on 6/28/2025). The average price during this period is $30.94.
Current Trend: Walmart.com prices have ranged from $30.94 (Jun 10) to $30.94 (Jun 10) over the past 90 days. Current price is close to the 90-day average of $30.94.
Customer Insights: Rated 4.4/5 from 1064 reviews.
I love these waterproof mattress protectors in all sizes and the pillow covers too. Why did Mainstays stop making them?? Not a fan of Allerease or the additional cost. I hope they come back. When they stop making something it just pushes people to Amazon and other sellers for items.
I am absolutely in love with this mattress protector, it is completely silent and soft. The first one I bought has been washed 10 times (dried on low heat) and it's still holding up great. The only reason why I know that it's the first one is because it's the only Queen size. I have gotten them for both of my kids and my grandkids and I got my friend hooked on them. They really are the best protector I have found and the only one I want.
I have a queen size bed and this was a perfect fit. I really appreciate the fact that the sides are protected also! I spilled something once and didn't realize that it went over the edge of the mattress and so the whole side stained. That was very heartbreaking. For the price it's absolutely amazing! I would definitely recommend it to anybody.
This seems to be much better than the last mattress cover I bought. The difference is this one seems to be a lot better and much cheaper. I saw some reviews that said it was noisy and it absolutely is not. I'm glad I was able to get this one at a good price and it seems to be a good quality. It wasn't any harder to put on my bed than a fitted sheet.
This Mainstays Mattress Protector is great. It is Soft Terry, waterproof, and fits snuggly. It fits mattresses up to 15 inches deep. I just replaced my mattress and this will definitely help to keep it clean and dry, safe from spills by my kids. It goes on so easily, with no fighting to get the corners in place. It is antimicrobial and allergy-resistant. I machine-washed it on a gentle cycle and dried it on low. It looks perfect. It doesn't show wrinkles under my sheets and doesn't make any noise when you are turning in bed as some waterproof protectors do.
The material seems nice. My daughter is 5 and got a new mattress. This is a prevention measure in case she has an accident while sleeping. I cannot state on waterproof capabilities since shes been accident free with this!
This meets my expectations on every level. I'm glad that I found it, because I didn't want to enclose my entire top mattress which is a very big one.
I only gave it a three star because I thought it was a complete cover that was covering the whole mattress, but it covers it on the top in the sides. I ended up using it over a complete cover that came actually later in way past my order because it came per mail and the post office had held my mail. I ordered this product in December and I never got it until April.
There is only one thing wrong with this item, and if they would change it it would be a 5 star for me. The sides are of a very slippery material (polyester?). It most certainly isn't terry, as is the top. Used it for one night, and had a terrible night's sleep. Why? I discovered in the morning that all four sides of my fitted sheet had come loose, and I was totally entangled in the sheet when I awoke. The fitted sheets (good quality, never had a problem with them coming loose) simply could not stay in place with the slippery material on the sides of this product. This had to go, and despite it being used Walmart stood behind the product and refunded my money on the washed item's return
It's NOT waterproof my cat peed on the bed and it soaked through the mattress cover into the mattress. I choose this terry one since it's softer than the plastic type covers and it claimed to be waterproof but instead now need to buy another cover.
Detailed price history for the past 90 days
Walmart.com prices have ranged from $30.94 (Jun 10) to $30.94 (Jun 10) over the past 90 days. Current price is close to the 90-day average of $30.94.
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