How to Choose Mattress Firmness

The right mattress firmness comes down to two things: how you sleep, and how much you weigh. Side sleepers generally need a softer, more contouring feel to relieve pressure at the hips and shoulders. Back sleepers do best on a medium to medium-firm feel that keeps the spine neutral. Stomach sleepers need a firmer, flatter surface so the hips don't sink and pull the lower back out of alignment. If you move between positions through the night, a medium feel gives you the most flexibility.

Sleep position is only half the picture — body weight changes how firm any given mattress actually feels underneath you. A lighter sleeper will sink less into a mattress and may find it firmer than a heavier sleeper lying on the exact same surface, since more weight compresses the comfort layer and coil system further. If you're on the lighter side, you can often size down in firmness for the same contouring feel a heavier sleeper would get from a firmer option. If you're heavier or sleep with a partner, leaning firmer than your position alone would suggest usually gives better support and a longer-lasting mattress.

Nidi Kumba's range is built to cover this whole spectrum. The Nidikumba Ayu Spring 8.5" uses individually wrapped pocket coils for a medium feel with genuine contouring and orthopedic support — a strong default for side and combination sleepers, and for couples who want minimal motion transfer. The Nidikumba Signature 10.5" gives you a classic, springy medium feel on a Bonnell coil system, with an optional pillow top if you want extra plushness. If you sleep on your back or need firmer, budget-friendly support, the Nidikumba Rise 8.5" is built firm on a continuous coil base. And for stomach sleepers or anyone managing back pain, the Ayu Sleep 6 is a dense, therapeutic foam mattress built for firm, no-sink support with no soft comfort layer to fight against.

If you're still unsure, it's safer to size firmer rather than softer — a too-soft mattress causes far more back and joint complaints than a too-firm one, and most people adjust to a firmer feel within a few weeks. You can compare the full firmness range, along with sizes and pricing, on our mattress page.