Customer Pick
4.3 out of 105 reviews READ REVIEWS

Mattress Helper® Under-Mattress Cushioned Mattress Support - King

S&H: $10.97

This item is eligible for gift options.

Overview & Details

Mattress Helper® Under-Mattress Cushioned Mattress Support  
No one likes a sagging mattress — or having to spend their hard-earned cash on a new one. These Mattress Helpers are designed to go between your mattress and box spring and reinforce those soft areas for added support. Firm but flexible, they provide plenty of comfort to help you get more restful sleep. So forget the stress of mattress shopping, and settle in for the better slumber you deserve. 

Good to Know
  • Mattress Helper is not a medical nor an orthopedic device.
  • If you experience any pain or discomfort as a result of using Mattress Helper, you should immediately discontinue use and seek the medical attention of your doctor or physician.
  • 2 people are needed to install this item: 1 person to lift the mattress and 1 person to put the Mattress Helper in place.
  • Use caution when lifting any mattress to install Mattress Helper to avoid back injury.
  • Mattress Helper is not a topper and is intended to go underneath your mattress only.
Measurements: Approx. 50"L x 31"W x 2" Deep
Material Composition: High density polyurethane foam with non-slip additive finish
Care: Spot clean only
Country of Origin: USA


Under-the-mattress support
  • Designed to be placed between the mattress and the box spring
  • Helps reinforce the soft area where your mattress sags and raises it for added support 
  • Cushioned support helps provide comfort for restful sleep
  • Can help create the feel of a medium-firm feeling 
  • Helps your bed look and feel better
  • Can be moved anywhere under the mattress to adjust for your personal comfort and support

Made of durable high density polyurethane foam
  • Allows mattress to continue to flex and move

Patented spacing design
  • Allows for a comfortable and firmer mattress for a more restful night's sleep

Non-slip fabric covering
  • Keeps the Mattress Helper in place between the mattress and box spring
  • Helps prevent shifting under the mattress


Mattress Helper® Under-Mattress Cushioned Mattress Support - King
105 reviews 4.3 out of 5

Review Breakdown

5 Star
69.52% 73
4 Star
11.43% 12
3 Star
5.71% 6
2 Star
6.67% 7
1 Star
6.67% 7
Would recommend to a friend
  • Saved my sagging Couch.

    I ordered this for my couch,which I love. but has seen better days. I put this under the cushions and I have my favorite couch back. I can actually get up from it now.

    heidii, GA
    Was this review helpful? 3 out of 3 found this review helpful
  • They REALLY Work!!

    We have 5-year old Tempurpedic, an Investment that you hope not to repeat often.. It was INVALUABLE when I broke my Pelvis in 3 places a few years ago! However, after healing I noticed a distinct DIP in that area of the mattress.. I tried those slats sold on TV for sagging couches. Not good.. Then I saw this on HSN. I convinced Hubby to try 'em. They ACTUALLY WORK! My DIP is much less noticeable & my 7', 280lb Hubby's side got a nice boost too! A BIG RETURN for a Small Investment! Thanks, HSN!!

    SoBlessed224, VA
    Was this review helpful? 6 out of 6 found this review helpful
  • Try before buying a new mattress

    Frustrated with my 5 year old mattress that had become uncomfortable from dips and low spots we almost bought a new one. Fortunately I found this on the hsn website. Its saves us thousands, and given us a better nights sleep. No more sore backs when we wake up!

    natmccann, OH
    Was this review helpful? 5 out of 5 found this review helpful
  • Mattress support

    It's been in use a couple of weeks, and so far, it does as advertised.

    jbull3, FL
    Was this review helpful? 3 out of 3 found this review helpful
  • Wonderful Product - Mattress Helper

    Purchased in a twin for my guest bedroom bed and it has made a huge difference in a very old mattress. Very comfortable and sleepable now; mattress was sinking to one side bed is full size). Wanted to order in a full but HSN has sold out, please restock these because I could use another one.

    821mary5, FL
    Was this review helpful? 6 out of 6 found this review helpful