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Deal.ai › Compare

Organic Waterproof Mattress Protector vs Mainstays NexGen Waterproof Zippered Mattress Protector

Buy the Avocado Organic Waterproof Mattress Protector if you want a quiet, breathable organic cotton surface and only need to guard the sleep surface. Buy the Mainstays NexGen if you want a zippered full encasement that seals the sides and bottom, or you need a low-cost barrier for kids, pets or a guest room. The Avocado wins on materials and certifications, with GOTS organic cotton, GREENGUARD Gold, OEKO-TEX and MADE SAFE, and owners call it soft and non-crinkling. The Mainstays wins on coverage and durability of seal, wrapping the whole mattress, but it is a basic white zippered cover with a 3-year warranty and no organic or emissions certifications.

  • Choose the Avocado Organic Waterproof Mattress Protector if you want a quiet, breathable organic cotton fitted protector for a Cal King or Queen and surface spills are your main concern.
  • Choose the Mainstays NexGen Waterproof Zippered Mattress Protector if you want a full zippered encasement that seals the sides and bottom, or you are protecting a mattress from kids, pets or heavy use.

Prices

  • Organic Waterproof Mattress Protector: $69.00 at Amazon (last seen Nov 7)
  • Mainstays NexGen Waterproof Zippered Mattress Protector: $15.44 at Walmart (last seen Nov 9)
  • Difference: the Mainstays NexGen Waterproof Zippered Mattress Protector is $53.56 cheaper than the Organic Waterproof Mattress Protector at the latest prices (Nov 7 and Nov 9)
O
Organic Waterproof Mattress Protector

Organic Waterproof Mattress Protector

4.8(1,094 ratings)
$69.00at AmazonChecked Nov 7
See all prices and details
Visit Amazon

As an Amazon Associate, Deal.ai earns from qualifying purchases.

Pros
  • Soft organic cotton surface that does not crinkle
  • Strong third-party certifications, including GOTS and GREENGUARD Gold
  • Quiet and breathable for hot sleepers
  • Works on any mattress and on adjustable bases
  • Deep-pocket option fits mattresses up to 22 inches
Cons
  • Fitted style leaves sides and bottom unprotected
  • Waterproofing can fade with use and laundering
  • Not meant for heavy or prolonged liquid exposure
  • May need up to three washes to fit properly
Mainstays
Mainstays NexGen Waterproof Zippered Mattress Protector

Mainstays NexGen Waterproof Zippered Mattress Protector

4.4(33,797 ratings)
$15.44at WalmartChecked Nov 9
See all prices and details
Visit Walmart
Pros
  • Zippered full encasement seals the entire mattress
  • Hypoallergenic and vinyl-free
  • Backed by a 3-year manufacturer's warranty
  • Huge review base of about 33,800 ratings
Cons

What separates them

Organic Waterproof Mattress ProtectorMainstays NexGen Waterproof Zippered Mattress Protector
CoverageFitted sheet style covers the sleep surface only; sides and bottom are not sealedZippered encasement wraps the whole mattress, sides and bottom included
Surface materialGOTS-certified organic cotton jersey over a TPU membraneWhite synthetic cover, hypoallergenic, vinyl-free
Noise and feelDesigned not to crinkle; owners call it soft and quietTypical zippered cover feel; less breathable than cotton
CertificationsGOTS, GREENGUARD Gold, OEKO-TEX and MADE SAFE; tested for 679 PFAS substancesNo organic or emissions certifications listed
Sizes and depthCal King and Queen; fits mattresses up to 16 inches, with a deep-pocket option to 22 inchesQueen only in this listing
Waterproof durabilityWaterproofing can weaken with repeated washing; not for prolonged liquid exposureFull barrier with a 3-year manufacturer's warranty
CareMachine washable; may take up to three washes to reach intended fitMachine washable, easy-care
Review base4.8 out of 5 from about 1,094 ratings4.4 out of 5 from about 33,800 ratings

Price history

$69.00$30.88
Nov 7Nov 10
  • Organic Waterproof Mattress Protector: lowest $32.99 on Nov 10 at Amazon.
  • Mainstays NexGen Waterproof Zippered Mattress Protector: lowest $30.88 on Nov 10 at Walmart.

Prices at every store

Organic Waterproof Mattress Protector

  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $69.00Free shippingChecked Nov 7
    Visit Amazon

Also available at

  • QuinceCheck price at Quince
  • Avocado Green MattressCheck price at Avocado Green Mattress
  • Mattress WorldCheck price at Mattress World
Prices and history →

Mainstays NexGen Waterproof Zippered Mattress Protector

  • WalmartNew

    In stock

    $15.44+ $5.99 shippingChecked Nov 9
    Visit Walmart

Also available at

  • WalmartCheck price at Walmart
Prices and history →

Specs compared

SpecOrganic Waterproof Mattress ProtectorMainstays NexGen Waterproof Zippered Mattress Protector
SizeCal King, QueenQueen
ColorNaturalWhite
TypeMattress Protector—
Length80"—
Width60"—
ThicknessFits mattresses up to 16'' deep—
Care InstructionsMachine washable—
Sustainability CertificationsOrganic—
CertificationsSTANDARD 100 by OEKO-TEX certified (Inner elast…—
StyleFitted—
Age RangeAdult—
Use CaseBedroom—
Show all 23 specsShow fewer specs
SpecOrganic Waterproof Mattress ProtectorMainstays NexGen Waterproof Zippered Mattress Protector
Solution ForAllergies—
Typical UsersFamily—
Core MaterialTPU polyurethane barrier—
Cover MaterialOrganic cotton jersey—
MaterialTPU polyurethane barrier, Organic cotton jersey—
Closure TypeFull elastic perimeter—
Construction Highlights3-layer system—
Fill Specialty StyleOrganic—
For KidsYes—

What reviewers say

Organic Waterproof Mattress Protector

  • 4.8 / 51,094 ratings

Rated 4.8 out of 5 from 1,094 ratings, buyers mostly praise the soft cotton feel and the absence of crinkling. Complaints center on fit for very deep mattresses and on drying time after washing.

What people mention
  • FeelPraisedBuyers say the cotton surface feels soft and not like plastic.
  • NoisePraisedOwners report it does not crinkle under the sheets.
  • WaterproofingPraisedReviewers say spills and sweat stay off the mattress.
  • FitMixedSome say it fits well, while others find it tight on deep mattresses.

Mainstays NexGen Waterproof Zippered Mattress Protector

  • 4.4 / 533,797 ratings

With tens of thousands of ratings averaging about 4.4 out of 5, most owners say it does its job: it keeps spills and stains off the mattress and holds up through washes. Complaints center on the plastic feel, warmth and a fit that can be snug or baggy depending on mattress depth.

What people mention
  • WaterproofingPraisedOwners say it stops spills and accidents from reaching the mattress.
  • NoiseCriticisedSome find the waterproof layer crinkly and noticeable under sheets.
  • FitMixedFit varies; some say it hugs the mattress, others find it tight or baggy.

Questions and answers

Which is better for bedwetting or pets?
The Mainstays NexGen, because the zippered encasement seals the sides and bottom, not just the top. The Avocado is made for spills, sweat and occasional accidents, not prolonged liquid exposure.
Which feels better to sleep on?
The Avocado. Its organic cotton jersey is soft and designed not to crinkle, and owners say it sleeps cooler than plastic covers. The Mainstays is a standard synthetic zippered cover.
Which lasts longer?
The Mainstays carries a 3-year manufacturer's warranty and its full barrier does not depend on a surface coating. Avocado owners report that waterproofing can diminish with repeated washing.
Is the Avocado worth stepping up to?
Yes if organic materials, low emissions and quiet comfort matter to you, and you only need surface protection. Skip it if you need the mattress fully sealed.
Will the Avocado fit a deep mattress?
The standard version fits mattresses up to 16 inches deep. A deep-pocket option covers mattresses up to 22 inches. The Mainstays listing is Queen only.
Does either work on an adjustable base?
The Avocado is stated to work on adjustable bases. The Mainstays zippered cover wraps the whole mattress, so check that its fit allows the base to flex.

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More comparisons

  • Organic Waterproof Mattress Protector vs SafeRest Premium Mattress Protector
  • Mainstays NexGen Waterproof Zippered Mattress Protector vs SafeRest Premium Mattress Protector
  • Waterproof Mattress Protector vs Mainstays NexGen Waterproof Zippered Mattress Protector

Buying guides that pick them

  • Best waterproof mattress protectors
  • Basic white synthetic cover with no organic or emissions certifications
  • Less breathable than a cotton surface
  • Queen only in this listing
  • Zippered install is slower than a fitted protector
bed_size
—
Queen
multipack_quantity—1
WarmthCriticised
A few owners say it sleeps warmer than a standard pad.