Firmness
Medium
Type
Pocket Spring
Depth (cm)
27
Number of Layers
3
Trial Period (nights)
60
Warranty (years)
5
Price Range
£339
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.
The strongest reasons to pick this mattress are the natural, chemical-conscious build and the tailored support. It contains no foam and no FR chemical treatment, which will reassure parents who want fewer synthetics near a growing child. The 600 individual pocket springs adapt to posture, so your child is supported whether they sleep on their back or curled on their side, and Silentnight states the zoned Mirapocket® design is scientifically proven to improve spinal alignment. Breathable British Wool and an airflow border help with overheating, useful if your child runs warm at night. The medium firmness suits most growing sleepers. £339 is a real spend for a single, but the 60-night trial takes some of the risk out.
Key Features & what's inside
- Quilted sleep surface. A soft quilted top with a breathable airflow border, which means air can circulate through the mattress rather than heat building up. It gives the sleep surface a gently cushioned feel.
- British Wool. A layer of premium British Wool, a naturally breathable fibre that wicks moisture and helps regulate temperature. Your child should feel fresher through the night, particularly in warmer months.
- Pocket springs. 600 individual Mirapocket® springs adapt to your child's posture and let them move freely while staying supported. The zoned design is, Silentnight states, scientifically proven to improve spinal alignment and posture.
Layer details from silentnight.co.uk product page, September 2026.
Who's it NOT for?
It only comes in a UK single, so it won't work if you need a small single for a compact bed frame or a double for an older teen. And if your child strongly prefers a very soft or notably firm feel, this medium tension may not be the best match.
Silentnight Healthy Growth Starry Natural Mattress
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How firm is the Silentnight Healthy Growth Starry Natural mattress?
Silentnight rates it as medium. That middle-of-the-road tension suits most children, giving enough give for lighter bodies and side sleepers while keeping the spine supported as they grow.
Does the Silentnight Healthy Growth Starry Natural come with a trial?
Yes. Silentnight offers a 60-night trial when you buy from them, so your child can sleep on it at home before you commit. It also carries a 5 year guarantee.
Is the Silentnight Healthy Growth Starry Natural mattress chemical free?
It is free from foam and FR chemical treatments, and it's hypoallergenic. Silentnight uses natural British Wool in the comfort layer, which makes it a reassuring pick if you're cautious about synthetics in a child's bed.
How thick is the Silentnight Healthy Growth Starry Natural mattress?
It measures 27cm deep, a substantial depth for a children's mattress. Standard UK single fitted sheets should still fit, but check deeper-depth options if yours are snug.
How long does delivery take for the Silentnight Healthy Growth Starry Natural?
Silentnight lists delivery within 14 days when ordering from their own site. Delivery times may differ if you buy through a retailer, so check at checkout.
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