Sleepeezee Jessica 800 Pocket Support Mattress
Mattress
Sleepeezee Jessica 800 Pocket Support Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
27
Layers
3
Layer Details
- Platinum Breathable™ layer. A temperature-regulating top layer that helps your body stay at a comfortable temperature through the night. In practice, that means less waking up too hot or too cold.
- Gel Foam. A breathable foam that sleeps cooler than traditional memory foam, which means you get cushioning for aches and pains without the trapped heat. It gives the sleep surface a fresher feel.
- Pocket Springs. 800 individual pocket springs mould to your body shape, relieving pressure and delivering that medium to firm support. Because each spring moves independently, you'll feel less disturbance when a partner shifts position.
Layer details from mattressonline.co.uk product page, September 2026.
- Leaves room for the rest: At 90cm wide, the UK single frees up floor beside the bed for a desk or chest of drawers, which helps in a child's room where furniture competes for space.
- Support for a growing teen: The 800 pocket springs give a firm, supportive base for a teenager, although a small, lightweight child who sleeps on their side may find it a little firm.
- Check raised frames first: Before using it on a bunk or mid sleeper, compare the frame's maximum mattress depth with this mattress's 27cm, so the guard rail still sits high enough.
- A fresher surface for warm sleepers: A gel foam layer sits above the springs, which means a teenager who runs warm should find it feels slightly cooler than standard memory foam.
- Narrow enough for awkward rooms: The 90cm footprint can slot under a sloping ceiling in a loft conversion, and two UK singles let guests who aren't a couple sleep apart.
This size suits you if...
You sleep alone and want a medium firm, supportive feel in a compact room, or you're furnishing a child's or teenager's bedroom where a wardrobe and desk need space too. It also fits a spare room that works as an office most of the week and a bedroom for visitors now and then.
Consider another size if...
You share the bed or like room to spread out. We'd recommend the UK small double instead: the UK single is 30cm narrower at the same length, and we suggest at least 2.4m x 2.8m for the UK small double.
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Will the Sleepeezee Jessica 800 UK single fit a bunk bed or mid sleeper?
At 90 x 190cm it matches a standard UK single frame. The deciding figure is depth: this mattress is 27cm deep, and raised frames usually set a maximum so the guard rail stays effective. Check the bunk or mid sleeper maker's guidance before ordering.
How much room do I need for a Sleepeezee Jessica 800 single?
We suggest at least 2.1m x 2.8m of floor space for a UK single. That leaves enough space to walk around the bed and still fit a desk or wardrobe, which is usually what a child's room or home office needs.
Is the Jessica 800 UK single too firm for a child?
It depends on the child. Sleepeezee describes it as medium to firm, which suits a back sleeper or a teenager who wants support. A small, lightweight child who curls up on their side may find it a little too firm, and across verified owner reviews some people say it feels firmer than expected.
Jessica 800 single or small double: which should I buy?
Choose the UK single if one person sleeps in it and floor space is tight. The UK single is 30cm narrower than the UK small double at the same length, and we suggest at least 2.4m x 2.8m for the UK small double, so it only makes sense if the room allows.
Can a Sleepeezee Jessica 800 single go in a loft conversion?
Usually, yes. The UK single is 90cm wide and 190cm long, so it can run along the lower wall under a slope. Check that there is enough headroom to sit up at the side you get in from, and that the room meets our suggested 2.1m x 2.8m.