IKEA Cot & cot bed mattresses
JÄTTETRÖTT Pocket Spring Cot Mattress
Pocket springs wrapped in foam
Sizes: Cot bed
Silentnight Cot & cot bed mattresses
Safe Nights Lullaby Cot Mattress
Foam-free hypoallergenic core
- Maker's firmness
- Firm
- Sizes
- Cot, Cot bed
- Depth
- 10cm
- Trial
- 60-night sleep trial*
- Guarantee
- Lifetime guarantee (once registered)*
* As stated on the maker's UK website on 3 October 2026, for buying direct from them. Other retailers may offer different terms — check before you buy.
View at Silentnight (manufacturer's website)
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About it
A firm cot and cot bed mattress with a washable cover. The Lullaby Trust advises a firm, flat, waterproof mattress that fits the cot with no gaps — check your cot's inside measurements before you buy.
Key features from the maker
- Cot (60 x 120cm) and cot bed (70 x 140cm) sizes
- Foam- and chemical-free (per Silentnight)
- Machine-washable outer cover
- 10cm deep
Sizes, drawn to scale
UK and EU mattress sizes explained — always check the measurements of your bed frame.
Where these details come from
Checked on against:
- Safe Nights Lullaby Cot Mattress — silentnight.co.uk
- Baby mattresses and bedding — The Lullaby Trust
Makers change their products. If something here looks out of date, please let us know.