A topper is the cheapest way to change how your bed feels. Choose memory foam to soften a too-firm mattress, latex for durable support with bounce, and a cooling gel or wool topper if you sleep hot. Two to three inches suits most sleepers; go thicker only if your mattress is sagging.
A mattress topper is a removable comfort layer that sits on top of your bed. It is the most affordable way to make a firm mattress softer, add a little support to a sagging one, or cool down a bed that sleeps hot, usually for a fraction of the price of a new mattress. This guide covers the choices that actually matter so you do not waste money on the wrong one. For the bed underneath, see our mattress buying guide.
We compare toppers on material certifications, thickness, density and thousands of owner reviews for durability and heat. We do not physically test products or take payment for placement.
Topper materials, and what each fixes
Memory foam
Memory foam softens a too-firm mattress and relieves pressure at the hips and shoulders, which is why it is the go-to for side sleepers and aching joints. It can trap heat, so look for gel-infused versions. See our best toppers for a bad back for supportive picks.
Latex
Latex adds gentle support with a responsive bounce and lasts far longer than cheap foam. It breathes better than memory foam too. Shredded latex options like those in our best shredded latex toppers let you adjust the feel.
Egg-crate (convoluted) foam
The peaks and valleys of an egg-crate topper add airflow and a soft cushion at a very low price, ideal for guest beds and dorms.
Wool and feather
Natural wool regulates temperature year round and adds a plush, breathable layer without the sink of foam.
How thick should a topper be?
- 2 inches: a subtle softness change on a decent mattress.
- 3 inches: the sweet spot for most people who want a clear change in feel.
- 4 inches: only for very firm beds or to mask early sagging; a topper cannot rescue a worn-out mattress.
Match the topper to your problem
If your bed is too firm, add 3 inches of soft memory foam. If you sleep hot, choose gel foam, latex or wool. If you have back pain, pick a medium-firm foam or latex that keeps your spine level rather than letting your hips sink. If your topper keeps sliding, look for one with anchor straps. Browse all options in our mattress topper reviews.
Frequently asked questions
Can a topper fix a sagging mattress?
Only temporarily. A topper can smooth a small dip and add comfort for a year or two, but it cannot restore a worn-out support core. If the sag is deeper than an inch, replace the mattress.
What topper is best for back pain?
A medium-firm memory foam or latex topper, usually 2 to 3 inches, that keeps your spine aligned without letting the hips sink. Avoid very soft, thick foam if you have lower-back pain.
How thick should a mattress topper be?
Three inches suits most sleepers who want a noticeable change. Two inches gives a subtle adjustment, and four inches is only worth it on very firm beds.
Do mattress toppers make you sleep hot?
Dense memory foam can trap heat. Choose gel-infused foam, latex or wool, which all breathe better and help regulate temperature.
