Silentnight Essentials Miracoil Ortho Mattress

Assessed from Silentnight's published specification for this mattress, captured November 2026, and from regular price comparison across our UK retail partners.

The firm feel gives a flat, supportive surface, and Silentnight says the zoned support helps keep your spine aligned. The continuous spring system runs in head-to-toe rows, which Silentnight says prevents roll-together and gives excellent motion isolation, so it's a sensible pick for couples who share a bed. The hypoallergenic fillings and dust mite resistance help if allergies are a worry. It's handmade in the UK and comes with a lifetime guarantee. Suits most back sleepers, although anyone who likes a softer surface may find it too firm.

Back sleepers
The firm feel gives a flat, supportive surface, and the zoned support is designed to keep your spine aligned while you lie on your back.

Couples
Continuous springs run in head-to-toe rows, which Silentnight says prevents roll-together and isolates motion, so a partner's movements are less likely to disturb you.

Allergy sufferers
Hypoallergenic fillings and dust mite resistance mean the mattress is a sensible choice if allergies are a worry in your bedroom.

If you prefer sleeping on a soft or medium mattress, this might not be the best choice. It's rated firm, so side sleepers who want plenty of cushioning around the shoulders and hips may find it unforgiving. Silentnight doesn't publish a spring count, and there's no thick comfort layer here to soften the feel.

How firm is the Silentnight Essentials Miracoil Ortho?

It's rated firm. That suits back sleepers and anyone who likes a flat, supportive surface, although side sleepers who want a softer, more cushioned feel may find it too firm.

What sizes does the Silentnight Essentials Miracoil Ortho come in?

It comes in a UK single, UK small double, UK double, UK king and UK super king. Silentnight lists each in standard UK dimensions, so it should fit a regular UK bed frame.

How deep is the Silentnight Essentials Miracoil Ortho?

It's 22cm deep. That's a fairly slim profile, so it's worth checking your bed frame and any bedding you already own if you want a particular look.

Is the Silentnight Essentials Miracoil Ortho good for couples?

Yes, for most couples. Silentnight says the head-to-toe spring rows prevent roll-together and give excellent motion isolation. Both of you do need to be happy with a firm feel, though.

Does the Silentnight Essentials Miracoil Ortho come with a trial?

Yes. Silentnight offers a 60-night trial on it, and the mattress also carries a lifetime guarantee. Silentnight doesn't give a year count for the guarantee, so check its terms before buying.