How long do memory foam mattresses last? Plus, the signs telling you it's time for a new one

Small bedroom with pale cream walls, single bed with brown bedding, framed pictures on the walls and wooden vaulted ceiling.

When we think of the best mattress that money can buy, many of us envisage a memory foam mattress. But, how long do memory foam mattresses last on average, and will one prove a good investment in the long term?

Whether you opt for a memory foam hybrid mattress or pure memory foam, these mattresses are popular for good reason – largely the super cushioning comfort they provide.