Little Big Dreams Growing Support Traditional Spring Moon Single Mattress
The Little Big Dreams Growing Support Traditional Spring Moon Mattress pairs traditional open springs with a waterproof inner lining and a machine-washable outer cover, which means it supports growing bodies and copes with spills.
- Supports growing bodies
- Free from foam, chemicals & PVC
- Machine-washable outer cover
£199
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Little Big Dreams Growing Support Traditional Spring Moon Mattress
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Mattress details
Mattress
Little Big Dreams Growing Support Traditional Spring Moon Mattress
Size
Firmness
Construction
Open Coil Spring
Depth (cm)
14
Layers
3
Layer Details
Traditional open springs
Open springs that support growing bodies. They give a traditional, springy support rather than the contouring of foam.
Soft recycled fibres
A layer of soft recycled fibres for extra cosy comfort, which adds some cushioning above the springs without using foam.
Breathable knitted sleep surface
A breathable knitted surface that's hypoallergenic and gentle on skin, which suits children with sensitive skin.
Layer details from dreams.co.uk product page, November 2026.
Key benefits
- Narrow enough for a busy room: At 90cm wide, it leaves floor space for a wardrobe, desk and toy storage in a child's bedroom that has to fit everything.
- Slim 14cm profile: The 14cm depth keeps the sleep surface lower, which helps on cabin beds and mid sleepers where the frame's guard rail needs to stay above the mattress.
- Built for accidents: A waterproof inner lining sits under a cover that goes in the washing machine, so a night-time accident means a wash cycle rather than a ruined mattress.
- Gentle on sensitive skin: The knitted surface is hypoallergenic, and the mattress contains no foam, chemicals or PVC, which suits a child prone to irritated skin.
- Two beds side by side: In a room shared by siblings, two singles of this width can leave a walkway between them where a larger bed would not.
This size suits you if...
You're buying for a child or teenager who sleeps alone, your bed frame is made for a 90 x 200cm mattress, and you want something wipeable and washable that copes with spills and accidents without foam.
Consider another size if...
Your frame is a standard UK single built for 90 x 190cm, or you want a deep, plush mattress for an adult. This mattress comes in one size only.
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FAQ's
Will the Moon mattress fit a UK single bed frame?
Possibly not. Little Big Dreams lists it as 90 x 200cm, while a standard UK single measures 90 x 190cm (3ft x 6ft 3in). The width matches, but the length differs, so a frame built tightly for a UK single may not take it. Check the internal measurements of your frame first.
Is a 14cm single mattress suitable for a bunk bed or mid sleeper?
The 14cm depth is slim, which is helpful on raised frames because a thinner mattress keeps more of the guard rail above the sleeper. Every bunk, cabin and mid sleeper has its own maximum mattress depth, so check the frame manufacturer's guidance, and confirm the frame accepts a 90 x 200cm mattress.
What size room do I need for a single Moon mattress?
For a UK single we suggest at least 2.1m x 2.8m of floor space. This mattress is listed as 90 x 200cm rather than the standard 90 x 190cm length, so measure the full length of your bed frame against the wall it will sit on, especially in a loft conversion with a sloping ceiling.
Do UK single sheets fit a 90 x 200cm mattress?
A single duvet (135 x 200cm) will cover it without trouble. Fitted sheets are the thing to check: many are cut for a 90 x 190cm UK single, so look for sheets that state a 200cm length to make sure the corners stay put on this mattress.
Is the Moon single mattress a good choice for a guest room?
It suits a guest room used mainly by visiting children, thanks to the washable cover and waterproof lining. For adult guests it's a simple build, with open springs and recycled fibres rather than deeper comfort layers, and Little Big Dreams doesn't publish a firmness rating, so it is better suited to younger sleepers.