Sealy Posturepedic (Sealy)

Prosser Hills 13.5" Plush Mattress

Sealy Posturepedic (Sealy) Prosser Hills 13.5" Plush Mattress

Running these analyses costs money. Buy through my links to help keep lights on! I may get a small commission.

Overall

#1774 in

Mattress

according to Reddit Icon Reddit

Sentiment score38% positive
3
1
4
Last updated: Jun 22, 2026

Reddit Reviews

Reddit IconAlarming_Wasabi1788
5 months ago

You might want to try the: Sealy Posturepedic Plus Prosser Hills 13.5" Plush Mattress. We just returned ours back to Costco Friday. It was supportive but too soft for us. You may like it.

Reddit IconEngineerBoy00
7 months ago

We got the Sealy Posturepedic Plus Prosser Hill 13.5" plush king mattress about 4 months ago and so far we're loving it. We both have back problems and neither of us are having any issues so far. I'm a back sleeper and my wife is a side sleeper.

7 months ago

Five months ago we got the Sealy Posturepedic Plus Prosser Hills 13.5" Plush Mattress king, with box springs. So far we love it. We did a LOT of research and narrowed it down to looking at CostCo mattresses that were not rolled up/flattened/boxed/shrink-wrapped for delivery. We also wanted inside delivery, setup, and haul off of the old mattress. Over the years we've tried various options - our favorite was a 100% foam latex mattress that was flippable and not compressed, I don't recall the brand. It lasted for 7-ish years before the grooves/sags got to be untenable. Given how expensive it was we weren't ready to do that again so we looked at other options. We tried several mattresses in a box that came flattened then expanded after unpacking. Most were great for a year or two but then started to sag way too much. When we moved into our current house 8 years ago we got a traditional coil mattress and box spring which was 'okay' but lasted 7 years (don't remember the brand). So, our direct experience said either 100% latex foam (too expensive) or traditional, non-compressed mattress. We also wanted the simplest possible return process if we didn't like it, hence CostCo. That being said, mattress preferences are highly personal so your mileage may vary from anyone's advice, including mine. That's why we chose CostCo, for the ease of changing our minds (which we haven't had to do yet).

Reddit Iconmrbazo
6 months ago

I just returned one to Costco, lasted 4 months. It started to get strange lumps running lengthwise creating serious body pains upon awakening. Prosser hills firm to be exact. Swapped it out with the Stearns and Foster Kirkland and it is a much better mattress Delivery guys said they are getting a lot of returns across the Sealy lines at Costco, bummer because we have used the brand for years

Reddit IconMyOhMy2023
6 months ago

Whoa! 4 months ago (Labor Day sales) I *also* bought a Prosser Hills from Costco, though mine was Plush, size Full. I am underwhelmed, because there seems to be a ridge running lengthwise, head to foot. C'mon, I weigh all of 115 pounds and have made a point of trying to sleep in the center of the bed! I shouldn't be feeling anything except fully rested. My Costco does not have display beds. Do you know what the "street" model name is for your Stearns & Foster Kirkland? So I could maybe find it to test at Mattress Firm or other showroom. Is it the Studio model? I liked that one while I was shopping around. I'd like to stay with Costco, certainly for the price & guarantee, but also because I'm a little old lady in a small city apartment and manoeuvering these behemoth mattresses is beyond me.

Reddit Iconjanstress
6 months ago

Bought a Sealy Posturepedic Plus about 4 years ago and love(d) it until we noticed some sagging last year. It’s unfortunately gotten worse no matter how many times we’ve rotated it. Hubby and I are light weights and we travel about half the year so we estimate 50% the normal usage? Lets hope their warranty is fair. Our friends bought Casper around the same time and they’ve had no issues. I read that if you buy it online they will pick up for free if needed, so maybe consider online.

Reddit IconMaster_Cricket_6901
12 months ago

Yeah man, I hear that. I’ve been having problems from an overloaded delivery route for the last 10 years. I returned a firm Sealy posturpedic plus a while back, the previous model to these newer ones. And I’ve tried and returned countless mattresses over these years with no success. I’m in the process of trying to get layers for an all foam DIY.

Top Mattress on Reddit

1
Brooklyn Bedding Signature Hybrid

Brooklyn Bedding

Signature Hybrid

93% positive of 57 users

Durable, comfortable, adjustable firmness; excellent value.

$1399 Amazon
3
Helix Midnight Luxe

Helix

Midnight Luxe

81% positive of 108 users

Pain relief, side sleeper support; but some find too soft.

$1733 Amazon
4
Purple The Purple Mattress

Purple

The Purple Mattress

66% positive of 315 users

Unique grid feel, cool; but heavy, expensive, polarizing.

$1299 Amazon
5
Brooklyn Bedding Aurora Luxe Cooling

Brooklyn Bedding

Aurora Luxe Cooling

89% positive of 38 users

Excellent cooling, zoned support for heavier sleepers.

$1585 Amazon

Rankings by Use Case

Best for Ease of movement & sex

Novaform - Platinum 16.5" Luxury Hybrid Mattress

Ranked #1

Novaform - Platinum 16.5" Luxury Hybrid Mattress

Individuals who toss and turn frequently, or couples who prioritize a mattress that is responsive and bouncy for sexual activity, and dislike the "sinking" feeling of memory foam.
See rankings →

Best for Heavy & plus-size sleepers

Brooklyn Bedding - Titan Plus Luxe

Ranked #1

Brooklyn Bedding - Titan Plus Luxe

Individuals with higher body weights (typically 230 lbs or more) who find that standard mattresses quickly sag, lose support, and cause back or joint pain.
See rankings →

Best for Hot sleepers

Purple - The Purple Mattress

Ranked #1

Purple - The Purple Mattress

Individuals who consistently wake up feeling hot or sweaty, and find that their mattress absorbs and retains body heat throughout the night.
See rankings →

Best for Long-term durability

Sleep EZ - Organic Latex Mattress

Ranked #1

Sleep EZ - Organic Latex Mattress

Buyers who view a mattress as a long-term investment and want to purchase one that will maintain its support and comfort for over a decade, prioritizing total cost of ownership over a low initial price.
See rankings →

Best for Motion isolation for couples

Helix - Midnight Luxe

Ranked #1

Helix - Midnight Luxe

Couples or co-sleepers who are easily woken up by a partner's tossing, turning, or getting in and out of bed.
See rankings →

Best for Natural & organic materials

Sleep EZ - Organic Latex Mattress

Ranked #1

Sleep EZ - Organic Latex Mattress

Health-conscious individuals or those with chemical sensitivities who want to avoid synthetic foams, chemical off-gassing, and potentially hazardous materials like fiberglass in their sleep environment.
See rankings →

Other Reddit Recommendations:

FAQs