Silentnight Safe Nights Lullaby Breathable Cotbed Mattress
The Silentnight Safe Nights Lullaby Breathable Cotbed Mattress comes in Cot and Cot Bed sizes, giving you flexibility if you're planning for a bed that lasts beyond the cot stage.
- Breathable polyester core
- Machine washable cover
- Firm feel for growing babies
£119
Get the lowest price we've found
Detailed construction and materials information for the Silentnight Safe Nights Lullaby Breathable Cotbed Mattress isn't available yet, so if the finer points matter to you, it's sensible to check the retailer listing before you buy.
Mattress specifications
Firmness
Firm
Type
Depth (cm)
Number of Layers
Trial Period (nights)
Warranty (years)
Price Range
£119 to £139
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Certifications
Assessed from Silentnight's product page, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
If you want a cot mattress from a familiar British name at a fairly gentle price, this is a reasonable shortlist candidate. The starting price sits at the accessible end for a branded cotbed mattress, and having both Cot and Cot Bed sizes means you can match it to your existing furniture rather than the other way round. Yes, we're working with limited specification detail here, but the two-size range and clear pricing make it a straightforward option to weigh up. Do confirm the exact variant you're ordering, as the cot and cotbed versions are easy to mix up on the retailer's page.
Key features & layer details
We’re still collecting information on this mattress. Unfortunately, we don’t have its key features yet.
Best suited for?
Cot beds
Available in both Cot and Cot Bed sizes, which means you can match it to the furniture you already own.
Children
Designed as a cot mattress, it suits little ones moving into a cot or cot bed without needing a bigger adult mattress.
If you want full visibility of what's inside the mattress before buying, the available detail is slim, so a more transparently documented cot mattress may suit you better.
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 Lullaby Breathable Cotbed Mattress
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FAQ's
How much does the Silentnight Safe Nights Lullaby cotbed mattress cost?
It depends on the size you choose, and the price table on this page shows the current price for each size. The Cot size sits at the lower end and the larger Cot Bed at the upper end.
What sizes does the Silentnight Safe Nights Lullaby mattress come in?
Two sizes are available: Cot, which measures 60cm by 120cm with a 10cm depth, and Cot Bed, at 70cm by 140cm with the same 10cm depth. Measure your cot's internal frame before ordering, as the two variants are easy to confuse on the listing page.
Is the Silentnight Safe Nights Lullaby mattress for a cot or a cot bed?
Both variants exist, and the retailer listing doesn't always distinguish them clearly. The cotbed version is the larger of the two, so check the dimensions on your order confirmation carefully to make sure you're getting the size that fits your frame.
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