Sleepeezee Jessica 1800 Pocket Gel Mattress
Mattress
Sleepeezee Jessica 1800 Pocket Gel Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
27
Layers
4
Layer Details
- Knitted cover. A soft knitted finish that adds cosiness while allowing air to move through, which means the surface stays fresher overnight. It is designed for breathability rather than heat retention.
- StayCool™ Gel. A 3cm gel layer with an open cell structure, which creates space for airflow and helps disperse excess body heat. This is the layer doing most of the work if you normally sleep warm.
- Memory Foam. A 3cm layer that gently moulds to your shape, which means pressure eases at the shoulders and hips where you sink in most. Helpful if you wake with aches from firmer surfaces.
- Pocket Springs. 1800 individual pocket springs in total: 1000 SoftTech mini springs that contour closely to your body, plus 800 traditional pocket springs beneath for support. Because each spring moves independently, you should feel less disturbance from a partner turning over.
Layer details from mattressonline.co.uk product page, September 2026.
- Space to spread out on your own: At 30cm wider than the UK single, the UK small double lets you lie diagonally or flat out on your back, which means fewer nights with an arm hanging off the edge.
- Leaves floor space in a compact room: Being 15cm narrower than the UK double, it can leave that bit more clearance for a wardrobe door, a desk chair or a narrow bedside table.
- Helps small rooms feel less stuffy: Compact bedrooms and loft rooms warm up quickly, and the 3cm StayCool gel layer is designed to disperse body heat rather than let it build up around you.
- Calmer for occasional guest couples: Because the 1800 pocket springs move independently, two guests sharing the UK small double should feel a little less of each other turning over.
- Straightforward bedding: 4ft is a standard UK size, so small double fitted sheets are easy to buy, and a standard double duvet gives generous overhang.
This size suits you if...
You sleep alone and want more elbow room than a single allows, your bedroom is compact but still clears our suggested minimum of 2.4m x 2.8m, or you are furnishing a spare room where couples stay now and then rather than every night.
Consider another size if...
You share the bed with a partner most nights and both want room to move. We'd recommend the UK double instead, which gives 67.5cm each; allow at least 2.6m x 2.8m for the UK double.
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Is the Sleepeezee Jessica 1800 small double big enough for two adults every night?
For the odd weekend, yes, and the independent pocket springs help keep a partner's movements from travelling across. For nightly sharing it is snug. The UK double gives 67.5cm each for two people, and we suggest at least 2.6m x 2.8m of room for it.
Will a Jessica 1800 small double fit in a loft conversion or box room?
We suggest allowing at least 2.4m x 2.8m for a UK small double. In a loft room with sloping ceilings, measure the floor area where you can actually stand beside the bed, since that is what decides whether getting in and out feels comfortable.
Should I buy the Jessica 1800 in a small double or a double for a spare room?
If guests are mostly single people or couples staying a night or two, the UK small double saves 15cm of width and is the easier fit. If couples stay for longer visits, the UK double is kinder to them; we suggest at least 2.6m x 2.8m of room for the UK double.
Is the Jessica 1800 small double a good choice for a teenager?
It suits a teenager who has outgrown a single, since it is 30cm wider and the same length. The medium firm feel with memory foam near the surface should suit most back and side sleepers, although a teenager who sleeps on their front may find it softer than they would like.
Is the Jessica 1800 small double heavy to carry upstairs?
Sleepeezee does not publish a weight for this mattress, so check the brand's guidance before buying. Across verified owner reviews, people describe the Jessica 1800 as heavy, so if it is going up a narrow staircase to a loft room, plan for two people to carry it.