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Long Narrow Single Sheets
Our long narrow single sheets in 75cm x 200cm are designed for a perfect fit and superb comfort. Expertly woven and beautifully finished, each sheet offers the smooth feel, durability, and breathability you expect from exceptional bedding. Ideal for adjustable beds or slim mattresses, they bring reliable quality and a touch of everyday luxury to your sleep.
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25-38
15-25cm
Finding the right bed sheet
The type of sheet you need depends on your bed, your mattress depth, and how you prefer your bedding to feel. Fitted sheets sit over the mattress and are held in place by elasticated corners - Belledorm fitted sheets are available in three depths: standard 30cm for mattresses up to 22cm, extra deep 38cm for mattresses up to 30cm including those with a topper, and ultra deep 46cm for the deepest mattresses and adjustable beds. Flat sheets sit between you and the duvet and are the traditional choice for a layered, hotel-style bed.
Fabric makes the biggest difference to how a sheet feels. 200 thread count polycotton is lightweight, crease-resistant, and quick to dry - ideal for everyday use and children's beds. Egyptian cotton uses longer-staple fibres that produce a smoother, more consistent surface, and is available from 200 to 1200 thread count. For cooler sleep, bamboo has natural moisture-wicking properties. In winter, brushed cotton flannelette traps warmth with its soft, napped finish.
All Belledorm sheet fabrics are available in matching duvet covers and pillowcases, so you can coordinate your whole bed in one thread count and colourway.
Got Long Narrow Single Sheet Questions? We've Got Answers
A fitted sheet wraps around the mattress and is held in place by elasticated corners. It stays put overnight and is the standard base layer for most beds. A flat sheet is a single, unhemmed piece of fabric that sits between you and the duvet. It adds a layer of temperature regulation, protects the duvet cover from body oils and perspiration, and gives the bed a traditional, hotel-style finish. Many people use both together; some prefer just a fitted sheet and duvet.
The most common reason a fitted sheet pulls free is that the depth is wrong for the mattress. Measure the total depth of your mattress including any topper and choose a sheet with a box depth that matches - a 30cm sheet on a 28cm mattress will have very little fabric to tuck under and will slip off. Belledorm fitted sheets have fully elasticated edges (not just corner elastic), which keeps the sheet anchored more securely around all four sides of the mattress.
Yes, UK double bed sheet dimensions are standardised: fitted sheets are 135cm x 190cm, flat sheets are 230cm x 275cm, and duvet covers are 200cm x 200cm. Belledorm's double range follows these standard UK dimensions throughout.
The one variable is fitted sheet depth, this is not standardised and varies by product and brand. Always check the box depth (30cm, 38cm, or 46cm) against your mattress measurement before purchasing. One common point of confusion is the duvet cover: a double duvet cover (200cm x 200cm) is square, not rectangular, this is correct and standard across the UK industry. If you are buying bedding as a gift or for a property you cannot measure, standard UK double dimensions apply to the overwhelming majority of double beds manufactured since 2000.
Belledorm's long narrow single fitted sheets are sized for mattresses measuring 75cm x 200cm - combining the narrow width of a bunk bed / narrow single (75cm) with the extended length of a long single (200cm), designed for tall users in bunk beds, cabin beds, or narrow single frames.
| Product | Size |
|---|---|
| Fitted sheet | 75cm x 200cm |
| Flat sheet | 150cm x 290cm |
| Duvet cover | 135cm x 200cm |
The long narrow single is a specialist size combining two non-standard dimensions. It is narrower than a standard single (90cm) and longer than a standard single (190cm). Always measure your mattress carefully before purchasing - this size is easily confused with both the standard narrow single (75cm x 190cm) and the standard long single (90cm x 200cm).
A long narrow single fitted sheet (75cm x 200cm) is needed for tall adults or teenagers using bunk beds, cabin beds, or narrow single frames where the mattress is both narrower than a standard single (75cm rather than 90cm) and longer than a standard single (200cm rather than 190cm).
This size is most commonly found in European-specification bunk beds and cabin beds designed for taller users, and in some custom-built children's bedroom furniture where the bed frame is narrower than standard UK dimensions. If your bunk bed mattress is 75cm wide and 190cm long, you need a standard narrow single sheet. If it is 75cm wide and 200cm long, you need the long narrow single. Measure both dimensions before purchasing.
A long narrow single measures 75cm x 200cm. A standard narrow single (bunk bed) measures 75cm x 190cm - the same width but 10cm shorter. The two sizes use different fitted sheets which are not interchangeable.
A standard narrow single fitted sheet placed on a long narrow single mattress will be 10cm too short and will pull free from either the head or foot end. Always measure the length of your narrow mattress before purchasing: 190cm is standard narrow single, 200cm is long narrow single. The duvet cover is the same for both sizes (standard single 135cm x 200cm), so only the fitted sheet and mattress protector need to be size-specific.
To fully dress a long narrow single bed, you need a long narrow single fitted sheet, a standard single duvet cover, and one pillowcase. The fitted sheet must be specifically sized for the long narrow single (75cm x 200cm).
The complete long narrow single bed bedding list:
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Fitted sheet (75cm x 200cm) - must be specifically labelled as long narrow single
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Duvet cover (135cm x 200cm) - standard single size fits correctly
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Pillowcase - standard UK pillow is 48cm x 74cm; one required
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Flat sheet (150cm x 290cm) - optional
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Mattress protector - confirm it is long narrow single size (75cm x 200cm)
This is a specialist size - confirm availability before purchasing and measure your mattress carefully to confirm you need the long narrow single rather than the standard narrow single (75cm x 190cm).
Long narrow single sheets (75cm x 200cm) are a specialist size stocked by very few UK bedding brands. Belledorm is one of the few manufacturers to offer this size in the UK market.
The combination of narrow width (75cm) and extended length (200cm) makes this one of the most specialist sizes in the UK bedding range. If you cannot find this size, measure your mattress carefully - you may have a standard narrow single (75cm x 190cm) or a standard long single (90cm x 200cm) rather than the long narrow single, both of which have wider availability. Contact Belledorm directly if you are unsure which size you need.
A long narrow single measures 75cm x 200cm. A long single measures 90cm x 200cm - the same length but 15cm wider. Both are 200cm long but differ in width.
The long single (90cm x 200cm) is for tall adults who use a standard-width single bed and need extra length. The long narrow single (75cm x 200cm) is for tall adults using a narrow bunk bed or cabin bed frame where the mattress width is 75cm rather than the standard 90cm. If your mattress is 90cm wide, you need a long single sheet. If it is 75cm wide, you need a long narrow single sheet. The two sizes are not interchangeable for fitted sheets.