
Firm mattresses
Mattress Topper for a Firm Mattress
A mattress that feels like a board does not always need replacing. A pillow-top topper adds a soft layer on top. The question is how much softness you want.
Toppers to soften a firm queen mattress


Ultra Plush 4 Inch Bamboo Pillow Top Mattress Topper, 1000 GSM
How much softer do you want the bed?
Start by deciding how firm is too firm. If the mattress is a bit hard but you mostly like it, a light touch is enough. If it feels like sleeping on a board, you want a thicker layer. That is the whole difference between our two toppers.
The 550 GSM topper is medium plush. The 1000 GSM topper has about twice the fill and is ultra plush.
550 GSM: a little give
The 550 GSM queen topper softens the surface while the mattress underneath keeps doing the supporting. You stay on top of the fill rather than sinking in. It suits a mattress that is slightly too firm, or one that is fine but could be a little cozier.
Its pocket fits mattresses 8 to 20 inches deep.
1000 GSM: a deep plush layer
For a very firm mattress, or an older one that has lost some comfort, the 1000 GSM topper gives a thick pillow top. The fill is deep enough to change the whole feel of the surface. The pocket fits mattresses up to 21 inches deep, so it works on tall hybrids and memory foam too.
Before you buy
A topper softens the surface but does not repair the mattress. If the mattress is sagging in the middle or has broken down badly, a replacement may serve you better, and our guide on topper versus new mattress helps with that call.
Measure your mattress depth, and plan on deep-pocket fitted sheets. Both toppers are queen size, 60x80 inches, covered in bamboo viscose and polyester, and machine washable on a gentle cycle at 30°C or cooler.
Which topper softens a firm bed more
Same cover and build. The fill weight sets how soft the bed ends up feeling.
| Feature | 550 GSM topper | 1000 GSM topper |
|---|---|---|
| Fill weight | 550 GSM | 1000 GSM |
| Feel | Medium plush, you stay on top | Ultra plush, sink-in pillow top |
| Good match for | Warm sleepers, mattresses a touch too firm | Very firm or worn mattresses, a deep cushioned feel |
| Mattress depth it fits | 8 to 20 inches | Up to 21 inches |
| Construction | Bamboo pillow top | Bamboo pillow top |
| Care | Machine wash gentle, max 30°C | Machine wash gentle, max 30°C |
Product pages: 550 GSM queen topper and 1000 GSM queen topper.
Questions about this topper
What GSM mattress topper is best for a firm mattress?
For a slightly firm mattress, 550 GSM adds a medium plush layer. For a very firm mattress, 1000 GSM gives a much deeper cushion.
Can a topper make a firm mattress feel soft?
Yes, a plush topper changes the surface feel noticeably. It does not change the mattress structure, so the support underneath stays the same.
Is 550 GSM enough for a hard mattress?
If the mattress is only a little too firm, yes. If it feels very hard, step up to the 1000 GSM topper.
Will 1000 GSM be too soft?
It is our most plush option, with a sink-in pillow-top feel. If you like to stay near the surface, the 550 GSM is the safer pick.
Does the topper fit a deep mattress?
The 550 GSM topper fits mattresses 8 to 20 inches deep and the 1000 GSM topper fits up to 21 inches. Measure from the bottom edge to the top surface before you order.
Should I buy a topper or a new mattress?
A topper is a good fix when the mattress is structurally fine but feels too firm. If it is sagging or broken down, consider replacing it.



