Firmness
Firm
Type
Pocket Spring
Depth (cm)
27
Number of Layers
3
Trial Period (nights)
60
Warranty (years)
5
Price Range
£319
Best Sleeping Position(s)
Certifications
Assessed from Silentnight's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
If you want a natural, foam-free option for your child, this is a strong candidate. The British Wool layer breathes well, which means a child who runs warm at night should sleep more comfortably, and the 600 pocket springs adapt to their posture as they move rather than pushing back like a solid foam slab. The hypoallergenic build and the absence of foam and FR chemical treatments are a genuine point of difference for allergy-prone children. You also get a 60-night trial to test it properly at home, plus a 5-year guarantee and delivery in 14 days, which takes some of the risk out of the spend.
Key Features & what's inside
- Quilted sleep surface. A soft quilted top with a breathable airflow border, which means heat can escape around the edges rather than building up. It's the layer your child actually feels, gently cushioned rather than plush.
- British Wool. A layer of premium British Wool, a naturally breathable fibre that helps regulate temperature. In practice, that means a cooler, fresher feel through the night for warm sleepers.
- Pocket springs. 600 individual Mirapocket springs that respond to your child's posture separately, so they can shift position freely and stay supported. This gives a more tailored feel than a basic open-coil kids' mattress.
Layer details from silentnight.co.uk product page, September 2026.
Who's it NOT for?
At £319 it's a stretch if you only need a short-term bed for a rapidly growing child, and budget-conscious parents may find simpler options do the job. It's only available in a UK Single, so no small double for older teens. And if your child prefers a noticeably firm surface, the medium feel may be softer than expected.
Silentnight Healthy Growth Starry Natural Pocket Kids Mattress
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Is the Silentnight Healthy Growth Starry Natural Pocket firm or medium?
Silentnight describes it as medium firmness on its own site, although you may see it listed as firm elsewhere. Medium is the brand's own rating, offering support from the 600 pocket springs with a gently cushioned quilted surface on top.
Does the Silentnight Starry Natural kids mattress contain foam?
No. It's free from foam and FR chemical treatments, using British Wool and 600 Mirapocket springs instead. It's also hypoallergenic, which makes it a good fit for children with allergies or parents who prefer natural materials.
How deep is the Silentnight Healthy Growth Starry Natural mattress?
It's 27cm deep, which is a proper adult-style depth rather than a slim children's mattress. Check your child's bed frame and any safety rails will still sit high enough with a mattress this deep.
Does the Silentnight Healthy Growth mattress come with a trial and guarantee?
Yes. Silentnight offers a 60-night trial, so your child can sleep on it at home before you fully commit, and it's backed by a 5-year guarantee. Delivery is within 14 days.
What sizes does the Silentnight Starry Natural Pocket come in?
It's available in a UK Single only, priced at £319. That suits most children's beds, but there's no small single for compact frames or small double for older teenagers wanting more space.
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