Silentnight Safe Nights Twinkle Pocket Cotbed Mattress
The Silentnight Safe Nights Twinkle is a pocket spring cotbed mattress whose individual springs adjust to your baby's body weight.
- Free from foam & chemical treatments
- Supportive as your baby grows
- 60-night trial & 5-year guarantee
£179
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The Silentnight Safe Nights Twinkle is firm, which is what you want for an infant, and it's free from foam and chemical treatments, with hypoallergenic materials throughout. Silentnight says it has been tested to the highest UK safety standards in a SATRA approved lab, and it comes with a 60-night trial and a 5-year guarantee. At 10cm deep, it's a slim mattress by adult standards, though that's typical for a cot bed.
Mattress specifications
Firmness
Firm
Type
Pocket Spring
Depth (cm)
10
Number of Layers
3
Trial Period (nights)
60
Warranty (years)
5
Price Range
£179
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Certifications
Assessed from Silentnight's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
For anxious new parents, the reassurance here is the point. This mattress is foam and chemical treatment free, made with hypoallergenic materials, and tested to the highest UK safety standards in a SATRA approved lab, according to Silentnight's own product page. The pocket spring support system is a step up from basic foam cot mattresses: each spring adjusts to your baby's weight, which means proper support that keeps pace as they grow from baby to toddler. The firm feel is exactly right for safe infant sleep. Yes, the price is more than budget cot mattresses cost, but you get a 60-night trial and a 5-year guarantee, which is a decent safety net for the spend.
Key features & layer details
Cover
A soft touch quilted fabric with a cloud print. It's the surface your baby lies closest to, so the gentle quilting matters more than the pattern.
Core
A breathable polyester core, which means air can move through the mattress rather than trapping heat around your baby. Helpful, since little ones can't regulate temperature the way adults do.
Support System
Individual pocket springs adjust to your baby's body weight, providing ease of movement and an undisturbed night's sleep. In practice, that means the mattress responds to a growing child rather than pushing back with one uniform feel.
Layer details from silentnight.co.uk product page, September 2026.
Best suited for?
Cot beds
Made specifically as a cot bed mattress, it fits the cot bed sleeping space and has a firm feel that suits infant sleep.
Allergy sufferers
Hypoallergenic materials throughout and no foam or chemical treatments make it a sensible pick if you want a cleaner sleeping surface for your little one.
Warm sleepers
A breathable polyester core lets air move through the mattress rather than trapping heat, which helps a baby who can't regulate temperature like an adult.
Lighter sleepers
Individual pocket springs adjust to your child's body weight, so the mattress keeps supporting them as they grow from baby to toddler.
This is a cot bed mattress only, so it won't suit anyone shopping for a single bed or beyond. If you're after the cheapest option for a spare cot at grandma's, the price may feel like more than you need. And if you specifically want a foam mattress, this is springs throughout.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Silentnight Safe Nights Twinkle Pocket Cotbed Mattress
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FAQ's
Is the Silentnight Safe Nights Twinkle firm enough for a baby?
Yes. Silentnight describes it as firm, which is the recommended feel for infants. The individual pocket springs adjust to your baby's body weight, so it stays supportive as they grow rather than softening unevenly.
Is the Safe Nights Twinkle mattress safe for newborns?
Silentnight states it is free from foam and chemical treatments, uses hypoallergenic materials, and has been tested to the highest UK safety standards in a SATRA approved lab. It also has a firm feel, which is what safe sleep guidance favours for babies.
How deep is the Silentnight Twinkle cotbed mattress?
It's 10cm deep. That sounds slim compared with adult mattresses, but it's a sensible depth for a cot bed, keeping your baby well below the top of the cot sides.
Does the Silentnight Safe Nights Twinkle have a trial or guarantee?
Yes. Silentnight's product page lists a 60-night trial and a 5-year guarantee, so you have time to see how your baby settles on it, plus longer-term cover if anything goes wrong.
How long does delivery take for the Safe Nights Twinkle?
Silentnight lists delivery within 14 days. If your due date is close, it's worth ordering with a little breathing room.
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