Cot Mattresses
Browse our cot mattresses for safe, supportive sleep for your little one. Choose from a range of firm, breathable mattresses designed for babies and toddlers. Shop trusted UK brands with a 100-Night Comfort Trial and free next day delivery.
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Relyon Luxury Pocket Sprung Cot Mattress
RRP £240
Relyon Classic Sprung Cot Mattress
RRP £171
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What size is a cot mattress?
Our cot bed mattresses measure 70cm x 140cm, while our continental cot mattresses measure 60cm x 120cm, ensuring a perfect fit for standard cots and continental cribs.
How firm should a crib mattress be?
Mattresses for cots should always be very firm to support your baby safely. All of our cot mattresses meet UK safety standards and provide the correct support for healthy sleep.
What type of mattress is best for a cot?
The best cot mattress should be: firm, supportive, breathable, and easy to clean.
We stock a range of mattresses for cots from top UK brands, including Silentnight and Relyon, all designed for safe, comfortable sleep.
How much should I spend on a cot mattress?
Our cot mattresses range from around £150 to £250 depending on the features included.
With MattressOnline, every baby mattress comes with our 100 Night Comfort Trial and free next day delivery, so you can buy with confidence.
Advice and buying guides
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Why buy from MattressOnline?
Free delivery to most locations
Free next working day delivery on most of our mattresses and beds, or upgrade to weekend delivery.
100-night mattress comfort trial
Test your mattress for 100 nights and if you don't like it, simply swap it.
Old mattress disposal
We can collect and recycle your mattress - saving it from landfill.
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Sunday: 10am - 4pm
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Sunday: Closed
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