Free delivery

Comfort trial

Comfort fillings
Firmness rating

Support system
The Silentnight Kids Bonnell Bunk Mattress is a great choice for your little sleeper. The bonnell core provides reliable support with cosy Air Plus fibres for comfort night after night.

Highly supportive interlaced springs, joined together in a lattice design. Evenly distributing weight to relieve built-up pressure and improve spinal alignment.

Soft synthetic fillings create an incredible cosy feel. These fillings are durable and resilient, maintaining its shape and quality. A great balance between comfort and value for money.

A sumptuously soft finish that provides additional cosiness and warmth. Knitted covers enhance airflow and are incredibly breathable. So, you can enjoy a cooler snooze.
Firmer than a medium mattress for extra support

With a single-sided mattress, there's no need to flip. Simply rotate every few months to care for your mattress. Fuss free mattress maintenance!

About 5.5 inches deep. Depth is an important factor when buying a mattress as it can affect the suitability for particular bedding, mattress toppers and bed frames.

For your peace of mind

Expertly handcrafted in the UK. This product helps to support our economy and helps to reduce environmental impact.

This product conforms to BS7177: 2008, for use at home

For the highest standards of quality and safety
The Silentnight Kids Bonnell Bunk Mattress provides your little one with the cosy rest they deserve.
Bonnell springs
Featuring a core of bonnell springs that are formed from continuous coil wire. This creates a spring unit that is interconnected to provide even support across the mattress. Helping to keep your child feeling supported night after night.
Breathable feel
Providing cosy comfort is a layer of Silentnight's exclusive Air Plus fibres. These polyester fibres offer a cushioned medium to firm feel for secure comfort. Highly breathable, this layer helps to increase airflow to dispel heat and moisture.
Bunk suitable
With a depth of 14cm, this mattress is the ideal size for a bunk bed. This means the mattress fits safely on a bunk bed so you can rest assured your little one is safe.
Simple care
This mattress is single-sided for easy care, simply rotate it top to toe seasonally for even wear across the surface. This helps your child enjoy the cosy feel of the mattress for longer.
Trusted brand
As one of the first B-Corp certified sleep brands, Silentnight have proven why they are the UK's most trusted name in sleep. Their commitment to quality and environmentally responsible practices ensures a better night's rest and a brighter future for you.
And with a 5 Year Guarantee it's a good rest for your little one that you can sleep assured of.
This mattress comes with a 100-Night Comfort Trial - like all of our mattresses!
The trial lets you test your mattress for up to 100 nights. If it's not quite right for you, you can exchange it for a new one. To be eligible for the Comfort Trial, you'll need to purchase a mattress protector from MattressOnline with your new mattress.
It can take some time to get used to a new mattress, which is why we ask you to sleep on your mattress for 30 nights. If you're not happy with the feel after 30 nights, simply contact our Customer Service Team, and we'll arrange a mattress exchange.
| Firmness | Medium to firm |
| Comfort fillings | Soft White Fibres |
| Support system | Traditional Open Coil Springs |
| Cover | Knitted cover |
| Single-sided | Yes |
| Guarantee | 5 years |
| Awards & accreditations | Handcrafted in the UK, Approved by the National Bed Federation |
| Fire resistance | Conforms to BS7177: 2008, for use at home |
| Downloads | Silentnight Guarantee, Product Care and Assembly Instructions |
| Size | Width | Length | Depth |
|---|---|---|---|
| Single | 90cm | 190cm | 14cm |
Please allow for a tolerance of +/- 2cm
The following delivery methods apply to mainland England and most of Scotland, Wales and Northern Ireland. Please read our delivery page for more information.
Delivery within 10-14 Days We’ll call you to arrange delivery | FREE |
Delivery to the front door of your building | Yes |
Delivery to your room of choice | £20.00 |
Mattress recycling We'll take away your old mattress | £35.00 |
Delivery is on an all-day service, 7am - 8pm for mainland England and most of Scotland, Wales and Northern Ireland.
Need further information? Please visit our Delivery page.
A balanced snapshot of what customers love (and what they don't), generated by AI.
Poor quality, Too easy to be uneven
Verified Purchase
The mattress has enough support when lying down, but we can feel the springs when sitting on it.
Verified Purchase
Excellent mattress, fast and friendly delivery!
Verified Purchase
My children sleep well on them. Safe.
Verified Purchase
Great light and comfortable
Verified Purchase
My girl finds it comfortable and worth the money
Verified Purchase
Very comfortable bunk bed mattress, comparable to the thick one. Bought a silent night before and exchange for this. Although it costs much more , it worths the money !
Verified Purchase
Perfect fit and not to thick for the top bunk.
Verified Purchase
i feel okay for my sleeping quality
Verified Purchase
Good Points: Good quality Improvement Points: Not too firm as a support for a growing kids
Verified Purchase
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Mon-Sat: 9:30am - 5:30pm
Sunday: 10am - 4pm
Mon-Sat: 09:30am - 17:30pm
Sunday: Closed
customerservice@mattressonline.co.uk