Black Friday 2026 Mattress Toppers: What to Check Before You Buy

Before buying a mattress topper, match the size to your bed, then compare thickness, material and the cover. A topper changes how a mattress feels, but it will not repair a sagging one. Check that your sheets will still fit. More in the mattresses and bedding department.

Match your bed size

Toppers come in the same sizes as mattresses: twin, twin XL, full, queen, king and California king. A queen is 60 by 80 inches and a king is 76 by 80. Check the listing for exact dimensions, since a small mismatch leaves uncovered edges.

Some toppers for adjustable beds or sleeper sofas come in special sizes, so confirm yours.

Thickness and feel

Most toppers run from about one inch up to four. Thin toppers add a light softness, and thick ones change the feel more. A thicker topper adds more height, which can affect fitted sheets and the step into bed.

Think about your sleep position. Side sleepers often prefer more cushioning for shoulders and hips, while back and stomach sleepers may want firmer support.

Toppers by material

Density and support

For foam toppers, density affects how long the topper holds its shape. Higher density foam is generally firmer and tends to last longer, though it also feels different. The listing should give a figure in pounds per cubic foot.

Mattress Toppers to compare

Match the topper to your bed size and check the thickness. Listings by material are below.

Shop mattress Toppers→

Opens eBay in a new tab. Check condition, seller feedback and returns.

• TwinBrowse →
• FullBrowse →
• QueenBrowse →
• KingBrowse →
• Memory foamBrowse →
• FeatherbedBrowse →

Covers and staying in place

A cover can be removable and machine washable, or it may be a quilted fabric top. Elastic straps or skirts hold the topper in place so it does not slide. A non-slip bottom helps as well.

A zipped cover is easier to clean. Check the care label, since foam itself should not go in a washing machine.

Cooling and airflow

If you sleep warm, look for open-cell foam, gel, latex, or breathable cover fabrics. Wool and cotton also move moisture away. No topper can fully cancel the heat of the mattress below it, but the right material can help.

Smell and first use

New foam can have a slight smell when unpackaged. Many makers suggest letting it air out and expand for some time before use. Read the unboxing notes that come with it.

When a topper is the wrong fix

A topper suits a mattress that is fine structurally but feels too firm. If the mattress has visible sagging, body-shaped dips or loud, broken springs, a topper only hides the problem for a while. In that case, a replacement mattress is the better path.

Also consider your sleep partner. Two people with different comfort needs may want a topper with a firmer side, or a split size. Read how long the topper is expected to keep its shape, and check whether the maker offers a warranty.

Care and lifespan

Most toppers last longer when you rotate them every few months and air them out. Use a mattress protector over or under the topper to guard against spills. Spot clean foam gently with mild soap, and let it dry fully before putting sheets back on. Avoid folding foam toppers tightly for storage.

Toppers for guest beds and sofa beds

A topper is a simple way to make a spare bed, an older mattress or a sofa bed more comfortable for visitors. Measure the sleeping surface first, since sofa bed mattresses are often thinner and a different size from a standard bed. A topper that rolls up for storage is handy when guests stay only a few nights a year. Add a fitted sheet deep enough to cover both layers.

Buying online

For marketplace listings, look for clear photos of the actual topper, the cover and the label. Check that the listing states size, thickness and material, and that the model number is shown. Read the seller’s feedback and return policy, since compressed items may be hard to return. A new topper should arrive sealed in its packaging. Used toppers are rarely a good idea.