Firmness
Type
Depth (cm)
Number of Layers
Trial Period (nights)
Warranty (years)
Price Range
£119 to £139
Best Sleeping Position(s)
Certifications
Assessed from Silentnight's product page, captured September 2026, and from regular price comparison across our UK retail partners.
If you want a cot mattress from a familiar British name at a fairly gentle price, this is a reasonable shortlist candidate. The £119 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 & what's inside
Awaiting up to date specifications. Please check back later.
Who's it NOT for?
If you like to compare prices across several shops, this one is listed with a single retailer, which limits your options. And 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.
Silentnight Safe Nights Lullaby Breathable Cotbed Mattress
View all mattresses
How much does the Silentnight Safe Nights Lullaby cotbed mattress cost?
It's priced from £119, with the range running to £139 depending on which size you choose. 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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