Sleep Joy 4-Inch ViscO2 Ventilated Mattress Topper Review

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The Sleep Joy ViscO2 4-inch mattress topper is a breathable mattress topper that does not trap heat. As a result, you stay cool and comfortable while sleeping.

sleep joy 4-inch visco2

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The pad is made of a plant-based Polyurethane formula which means that it is noiseless, dustless and it will not mat down. This formula allows the foam material to breathe. Additionally, it will not worsen common allergies.

This mattress topper molds with the contours of your body in response to pressure and heat. People who suffer from frequent back and neck pain will surely benefit from this.

Also, the ViscO2 is treated with MicroSafe, an environmentally-safe agent that eliminates unpleasant bacterial odors. It also suppresses the growth of mold, mildew and fungi.

In an effort to provide you with an impartial review of the Visco Memory Foam, I did a research about its advantages as well as its negative points. Read what I found below so you can decide whether this mattress topper will fit your needs. I would also suggest reading other memory foam topper reviews so you’ll have more options to choose from.

The Sleep Joy Visco2 Memory Foam Topper is Breathable

One of the things that sets this mattress topper apart from the competition is it permits five times more air flow. The ventilated design provides efficient temperature control. Compared to other pads that lock in heat, the Visco Memory Foam will keep you cool and comfortable for a restful sleep every night.

sleep joy visco2 memory foam topper

It Provides Great Support

The Sleep Joy ViscO2 4-inch mattress topper provides individualized support by conforming to your body’s unique curves. This will allow for even weight distribution. The mattress topper will go back to its original shape gradually once you remove the pressure.

It provides improved alignment and pressure point relief. And since the pad minimizes motion transfer, you will not be bothered if you are sharing the bed with someone who moves around a lot when sleeping.

Features and Specifications

Sleep Joy 4-Inch ViscO2 Ventilated Mattress Topper

  • The ViscO2 is breathable, permitting five times more airflow so you stay cool and comfortable throughout the night
  • At four pound per cubic foot density, it has higher density than regular foam mattress toppers (usually two pounds per cubic foot). It provides better support that is especially beneficial for pregnant women and for people with chronic back pain
  • The MicroSafe treatment eliminates odor, bacteria, mold, mildew and fungi
  • This mattress topper is designed to promote head-to-toe air circulation while supporting the torso
  • It follows the contours of your body and it slowly transforms into its original shape once pressure is removed
  • It comes in different sizes: twin, full, queen, king, California king and twin XL
  • It provides pressure relief for a more comfortable sleep

Customer Reviews and Scores

As of this writing, this product has been reviewed by 300 plus customers so far. Most of the ViscO2 memory foam mattress topper reviews are favorable. However, it’s important for me to let you know about some concerns raised by a number of users. It’s up to you to decide whether these concerns are significant or not. One reviewer brought up a nagging concern and said “After several months of use, the structural integrity is gone, I suspect all the holes drilled throughout the topper is to blame”. This seems to be an isolated case because I can’t find other reviews that state the same issue.

Reviewers who rated this product poorly complained that the mattress topper is too soft. Some of them said “I found it way too soft. I’m a small to average sized woman, and my hips always sank down way farther than the rest of my body, which hurt my back”, “I rated this product as I did only for the sole reason that it was too soft and also did not support me adequately” and “It’s ok but could be a little firmer, I weigh 209 lbs and sink in a little to far, this would be better suited for 150 lbs and below, it also gets a bit warm”.

Other users on the other hand love the ViscO2 and said “I have been getting the best sleep ever and it feels like my bed at home”, “It’s been a miracle for me. I don’t wake up in tears, I don’t wake up in the middle of the night at all anymore” and “It is now almost 3 years of nightly wear and still wonderful and like brand new. Can’t say enough good things about this”.


The ViscO2 4-inch Ventilated Memory Foam Mattress Topper is great for anyone who wants a comfortable and soft mattress topper that can provide great support. Unlike most foam pads, this mattress topper does not have any strong chemical odors. Majority of the users are very happy with their purchase and they recommend this mattress topper to others.

If Sleep Joy 4 Inch ViscO2 Ventilated Memory Foam Mattress Topper is not the right choice for you than below are alternate Sleep Joys toppers to choose:

Back to best memory foam mattress toppers reviews home page.

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