Mainstays Soft Terry Waterproof Fitted Mattress Protector, California King
Mainstays Soft Terry Waterproof Fitted Mattress Protector, California King
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Mainstays

Mainstays Soft Terry Waterproof Fitted Mattress Protector, California King

Mainstays Soft Terry Waterproof Fitted Mattress Protector, California KingMainstays Soft Terry Waterproof Fitted Mattress Protector California KingMainstays Soft Terry Waterproof Fitted Mattress Protector QueenMainstays Soft Terry Waterproof Fitted Matress Protector FullMainstays Soft Terry Waterproof Fitted Mattress Protector Twin XLMainstays Soft Terry Waterproof Fitted Mattress Protector KingMainstays Soft Terry Waterproof Fitted Mattress Protector Twin
Bed Size:California King
Pack Size:Single

Key item features

  • Waterproof Protection: Protects mattress from spills and stains with waterproof TPU coating
  • Allergy Barrier: Acts as an allergen barrier to help reduce allergies
  • Antimicrobial Treatment: Treated with an antimicrobial agent to inhibit odor-causing bacteria growth
  • Easy Fit: Fitted design with stretchable sidewalls for quick and easy on/off, fits most mattresses up to 15 inches
  • Soft Touch: Super soft terry fabric for a comfortable feel
  • Machine Washable: Easy to clean, simply machine wash
  • California King Size: Specifically designed for California King size mattresses
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Current price is $30.94
Price when purchased online
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About this item

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Customer ratings & reviews

4.4 out of 5 stars
stars1,064 ratings329 reviews
How item rating is calculated
  1. 5 stars76% (804)
  2. 4 stars10% (110)
  3. 3 stars4% (47)
  4. 2 stars2% (22)
  5. 1 star8% (81)

Reviews summary

Pros

  • : Provides a gentle feel against the skin.
  • : Offers good quality at a cost that is not too high.
  • : Made with materials that can withstand harsh conditions.
  • : Fits various mattress sizes and types.
  • : Offers soft, washable mattress coverage.

Neutral

  • : Can be quiet, but also produces noise when moving.
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Showing 1-3 of 329 reviews

Oct 23, 2025
JustMom
Item details
Bed size: Twin
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

OMG, where have these been.

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.

Helpful?17WD39YWQZAU2846186117
Jan 8, 2026
JANEEN
Item details
Bed size: Full
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

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.

Helpful?17WD39YWQZAU2846186117
May 6, 2025
Kimtoos
Top Reviewer
Item details
Bed size: Queen
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

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.

Helpful?17WD39YWQZAU2846186117