ViscoSoft Restore HD Select High Density Topper (3-Inch)
Best for: A worn mattress that needs support back, for sleepers who want some contouring
Dense memory foam with a medium-firm feel: the pick for a tired mattress that needs support back without going hard, though it is not a truly firm topper.
The Restore HD is ViscoSoft's high-density topper. ViscoSoft rates its DensityCore foam at 3.1 lb per cubic foot and describes the feel as medium-firm: it contours at the shoulders and hips and pushes back elsewhere. That puts it in a different place from the latex picks in our guide. It will hold up a mattress that has gone soft with wear, but if you want a hard surface, the latex toppers are firmer, and ViscoSoft itself says its 4-inch version feels firmer than the 3-inch we link. The foam is gel-infused with vertical airflow channels, sits in a removable machine-washable cover, and has gel-lined corner straps plus a beaded non-slip base to keep it in place. ViscoSoft backs it with a 5-year warranty.
Price & where to buy
Prices checked 2026-10-24Prices shown were last checked on 2026-10-24 and can change at any time — the price on the retailer's site at checkout is the one that applies. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product. As an Amazon Associate and affiliate we may earn a commission on purchases made through these links, at no extra cost to you.
How our prices work
We show the price at our recommended retailer as at our last check of that offer (2026-10-24) and, when Amazon reports one, its list price for comparison. Amazon prices come from Amazon's own product data service and are refreshed twice a day; each one shows the date and time Amazon gave it, and one older than 24 hours is replaced by “Check price”. Other retailers' prices are checked by hand and show the date of that check. Retail prices move constantly, so the price on the retailer's own page at checkout is the one that applies. More on Amazon prices
Should you buy it?
What we like
- High-density foam: 3.1 lb per cubic foot, per ViscoSoft
- Removable, machine-washable cover included
- Gel-lined corner straps and a beaded non-slip base
- 5-year warranty
What to know before buying
- Medium-firm by the brand's own description, not truly firm
- Memory foam can sleep warmer than latex despite the gel and airflow channels
- Ships compressed and can take up to 48 hours to fully expand
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At a glance
How it scores
How our 8.2/10 breaks down — rated on the dimensions that matter most for mattress toppers, from published specifications and third-party test data, not the marketing.
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Compare with alternatives
Quick verdicts for the mattress toppers most often considered alongside the ViscoSoft Restore HD Select High Density Topper (3-Inch).
ViscoSoft Restore HD Select High Density Topper (3-Inch) vs Sleep On Latex Pure Green Latex Topper (Firm, 2-Inch)
The firm topper with numbers behind it: certified organic natural latex in a Firm grade the brand rates at 46 lbf, to put support back on a mattress that has gone too soft.
→ Back and stomach sleepers on a mattress that has become too soft but still lies flat
Sleep On Latex Pure Green Latex Topper (Firm, 2-Inch) review →ViscoSoft Restore HD Select High Density Topper (3-Inch) vs Latex Mattress Factory Dunlop Latex Topper (Firm, 2-Inch)
Plain natural Dunlop latex at a published 38 ILD: a firm layer from a factory-direct maker, for a mattress that has gone a little too soft.
→ A firmer surface on a mattress that is only a little too soft
Latex Mattress Factory Dunlop Latex Topper (Firm, 2-Inch) review →ViscoSoft Restore HD Select High Density Topper (3-Inch) vs BedStory Firm Memory Foam Topper (3-Inch)
The lowest-priced firm topper in our guide: a 3-inch two-layer foam build with a washable cover and corner straps, though BedStory publishes no density or firmness figure.
→ Firming up a too-soft mattress on a smaller budget
BedStory Firm Memory Foam Topper (3-Inch) review →Not sure which one is right for you?
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Frequently asked questions
Is it a firm topper?
Not quite. ViscoSoft describes the feel as medium-firm: it contours for pressure relief but pushes back with support. That makes it a good fix for a mattress that has gone too soft with wear. If you want a properly firm surface, a firm latex topper will feel firmer, or go for ViscoSoft's 4-inch, which the brand says is firmer than the 3-inch.
What does 3.1 lb density mean?
Density is how much foam is packed into a cubic foot. Denser foam generally holds its shape longer and lets you sink less. ViscoSoft rates its foam at 3.1 lb per cubic foot and says most toppers use 2.0 to 2.5 lb foam. Density is not the same as firmness, though: it tells you how much foam there is, not how hard it feels.
Will it fix a sagging mattress?
No topper can level a real dip. A dense topper helps a mattress whose comfort layer has worn soft, but if the mattress has sagged where you sleep, the topper follows the sag and the money is better spent on a new mattress.
Can I return it?
ViscoSoft offers a 90-day money-back guarantee on purchases made at viscosoft.com. A topper bought on Amazon follows Amazon's return policy instead.