Extra Deep Fitted Sheets, Made in Britain

Hotel-quality fitted sheets, manufactured by Posh Tag in Rochdale and sold direct to you. Every fitted sheet is made with a fully elasticated, extra deep 40cm fit, so it sits smoothly and stays put on modern, deep and topped mattresses alike. This is luxury bed linen without the luxury price tag, because it comes straight from the people who make it.

British manufacturer, made in our own Rochdale factory · Over 15 years of textile manufacturing experience · Manufacturer direct, with no middlemen · Extra deep 40cm fit on every sheet · Fully elasticated for a secure hold · Six colours, five sizes

Fitted Sheets by a British Bedding Manufacturer

The fitted sheet is the part of the bed you feel first and notice most, yet it is the item people replace with the least thought. A sheet that is too shallow slides off in the night; one made from tired fabric never feels quite right. We think a good fitted sheet should do the opposite: grip the mattress firmly, feel soft against the skin, and hold its shape for years.

Posh Tag is not a retailer reselling someone else's bedding. We are one of the largest bedding manufacturers in Greater Manchester, producing our fitted sheets ourselves in Rochdale. That single fact shapes everything about this range. Because we manufacture in Britain and sell direct, we control the quality at every stage and pass the saving on to you rather than a chain of suppliers.

Every fitted bed sheet we make shares the same specification that matters most: an extra deep 40cm fit with a fully elasticated edge. Whether you need a single fitted sheet for a child's room or a super king fitted sheet for a large bed, you are getting the same considered construction and the same secure, hotel-smooth finish. Our fitted sheets come in five sizes and six versatile colours, so there is a match for every bed and every bedroom in the country.

If you have been searching for deep fitted sheets that genuinely stay on, luxury fitted sheets that last, or simply a reliable set of fitted sheets in the UK made to a standard you can trust, you are in the right place.

Why Choose Posh Tag

Most bedding sold online has passed through several hands before it reaches you: a factory, an importer, a wholesaler, a retailer. Every one of those hands adds cost without adding quality. We removed them. As a British manufacturer selling manufacturer direct, the sheet you buy comes straight from our Rochdale factory floor to your door.

That direct relationship is our biggest advantage, and it works in your favour in two ways. First, quality. When you make bedding yourself, you decide how it is cut, how it is stitched and how the elasticated edge is finished, rather than accepting whatever an outside supplier sends. We have been manufacturing textiles for over 15 years, and that experience is built into every fitted sheet we produce. Second, value. Cutting out the middlemen is precisely how we offer hotel-quality bedding at a fair price, giving you luxury without the luxury price tag.

There is also a reassurance that comes from buying from the maker. We understand mattresses, depths, sizing and how bed linen behaves over hundreds of washes, because it is our craft. When you buy a Posh Tag fitted sheet, you are buying the knowledge of a manufacturer who has thought carefully about the details, not a badge stuck on an imported product. Made in Britain. Made by us. Made to last.

Shop Fitted Sheets by Size

Getting the size right is the most important decision, so we have made it simple. Match your bed to the size below, and remember that every size is made to the same extra deep 40cm depth with a fully elasticated edge.

Single Fitted Sheets

Mattress size: 90 × 190cm. Ideal for single beds, children's rooms, guest rooms and bunk beds. A single fitted sheet in our range gives the same deep, secure fit as our larger sizes, so smaller beds get the same hotel-smooth finish.

Small Double Fitted Sheets

Mattress size: 120 × 190cm. The small double, sometimes called a 4ft bed, is a favourite for compact rooms and teenagers who want more space than a single without a full double footprint. Our small double fitted sheet is cut precisely for this size, so there is no bunching or loose corners.

Double Fitted Sheets

Mattress size: 135 × 190cm. The double is the most popular bed size in the UK, and our double fitted sheet is made to fit it exactly. It is the natural choice for main bedrooms, spare rooms and couples who prefer a cosier bed.

King Size Fitted Sheets

Mattress size: 150 × 200cm. A king bed offers welcome extra width and length, and our king size fitted sheet is made to cover it smoothly from edge to edge. If you have struggled in the past with a king size fitted sheet that never quite reached the corners, ours is designed to solve exactly that.

Super King Fitted Sheets

Mattress size: 180 × 200cm. The most generous size we make, for the largest beds and the most spacious sleep. A super king fitted sheet needs to be cut and elasticated properly to sit flat across such a wide mattress, and that is exactly how we make ours.

Why Every Sheet Is 40cm Extra Deep

Not long ago, a standard fitted sheet was made to fit a mattress around 25cm deep. Mattresses have changed. Today's beds are taller, thicker and built in layers, and a shallow sheet simply cannot cope with them. That is why every Posh Tag fitted sheet is an extra deep 40cm fitted sheet. There is no shallow option to get wrong, because we build every sheet to handle the mattresses people actually own.

The extra depth matters most across today's most common mattress types. On a deep or thick mattress, often 30cm or more in height, a standard sheet strains at the corners and pings off, while a 40cm sheet reaches comfortably underneath. A hybrid mattress combines springs with foam layers that add height, and our extra deep fit is made with that in mind. A memory foam mattress is often tall and dense, needing the depth to tuck fully beneath it. A pillow top mattress adds a raised soft layer that increases overall height, where extra depth is essential. And a mattress with a topper gains several centimetres, which a standard sheet often will not stretch over, whereas ours are made to fit a mattress and topper together.

The depth only works because of the fully elasticated edge that runs the whole way around the sheet. That continuous elastication pulls the sheet snug beneath the mattress and keeps the corners anchored through the night. Deep fit and full elastication together are why our sheets stay smooth and secure, instead of loosening by morning.

The Hotel Quality Difference

Slip into a well-made hotel bed and the sheet feels taut, crisp and completely still beneath you. That feeling is not luck. Hotels choose fitted sheets for a secure, tailored finish and for durability, because their bedding is laundered constantly and still has to look immaculate every single day.

We make our fitted sheets to that same demanding standard, then make them available for the home. The fully elasticated edge delivers the smooth, drum-tight surface you associate with a good hotel bedroom, and considered construction means the sheet keeps performing wash after wash rather than fading and slackening after a few months. Because we are the manufacturer, we hold that standard ourselves rather than hoping an outside supplier meets a hotel-quality brief. That is how a Posh Tag fitted sheet brings the discipline of hotel bed linen into an everyday bedroom, and how we keep it affordable while doing so.

Fitted Sheet Buying Guide

A little guidance makes all the difference between a sheet that frustrates you and one that fits perfectly. Here is everything you need to choose correctly.

How to choose the right size

Start with your mattress. Fitted sheets are sized to standard UK bed dimensions, so match your bed to the size you need: Single (90 × 190cm), Small Double (120 × 190cm), Double (135 × 190cm), King (150 × 200cm) or Super King (180 × 200cm). If you are unsure, check the label on your current bedding or measure the width and length of your mattress and compare. Buy the size that matches the bed itself rather than guessing by room size.

How to measure mattress depth

Depth is the measurement from the top surface of the mattress straight down to the underside, taken at the side. Include anything that adds height, such as an integrated pillow top or a separate mattress topper, in that measurement. Every sheet we make fits mattresses up to 40cm deep, so as long as your total depth is 40cm or less, our fitted sheets will fit.

Extra deep versus standard depth

A standard fitted sheet is typically made for shallower mattresses and struggles with modern beds. An extra deep fitted sheet is made taller so it can wrap fully around a thick mattress and tuck securely underneath. Because every Posh Tag sheet is 40cm, you never have to work out whether your mattress is too deep for our range, and you avoid the single most common cause of sheets slipping off.

Fitted sheet versus flat sheet

A fitted sheet has elasticated corners and wraps around the mattress to grip it, giving a smooth base that stays in place and is quick to make. A flat sheet is a plain rectangle with no elastic, used as a top layer between you and the duvet or tucked in by hand. Most people use a fitted bed sheet as the base of the bed for its secure, tidy finish, and add a flat sheet on top only if they prefer that extra layer.

Fitted sheets with mattress toppers

Adding a topper is one of the best ways to upgrade a bed, but it changes the height, and that catches a lot of people out. A sheet that fit before the topper often will not reach afterwards. Because ours are built at 40cm, they are well suited to topped beds, holding the mattress and topper together in one smooth, secure fit.

Common buying mistakes to avoid

The most frequent mistake is ignoring depth entirely and buying purely on bed size, then wondering why the corners lift. The second is forgetting to account for a topper. The third is assuming an extra deep sheet is too big for a standard mattress, when in fact the elasticated edge simply tucks any extra material neatly underneath. Buy the right bed size, keep your depth at or under 40cm, and our sheets take care of the rest.

Which Fitted Sheet for Your Mattress?

Every Posh Tag fitted sheet is made at 40cm deep, so our range is built to suit them all.

Colour Selection Guide

A fitted sheet sets the tone for the whole bed, so colour is worth a moment's thought. Our range comes in six versatile shades, and every colour is available in every size, from single through to super king, so you are never forced to compromise on either.

• White — The timeless hotel choice. Crisp and clean, it makes a bed feel fresh and works with any duvet cover or headboard.
• Grey — A soft, modern neutral that flatters contemporary bedrooms and pairs effortlessly with almost any colour scheme.
• Charcoal — A deeper, warmer grey for a cosier, more grounded look, especially handsome under white or cream bedding.
• Black — Sleek and confident, ideal for a modern, high-contrast bedroom or layering beneath lighter tones.
• Beige — A calm, natural tone that brings warmth and softness, sitting beautifully in relaxed and neutral rooms.
• Navy Blue — A rich, elegant shade that adds depth and character while remaining classic and easy to style.

Because every shade comes in every size, it is simple to buy more than one and rotate them, keeping one set on the bed and another in the wash. A crisp white paired with a cosy charcoal or navy blue lets you refresh the whole feel of a room without changing anything else.

Care Guide

Made well and cared for well, a fitted sheet stays soft, smooth and secure for years. A little routine keeps ours at their best.

• Washing. Launder your fitted sheets regularly to keep them fresh and hygienic. Wash similar colours together, particularly darker shades such as black, charcoal and navy blue, to keep the colour looking rich. A gentler wash is kinder to both the fabric and the elasticated edge over time.
• Drying. Take the sheet out promptly once dry and smooth it flat. This keeps it looking crisp and makes it far easier to put back on the mattress.
• Ironing and finishing. If you like the sharp, hotel-smooth look, a light press while the sheet is still slightly damp gives the neatest finish. For most people, simply smoothing the sheet as you fit it is enough.
• Storage. Store your sheets clean, dry and folded in a cool, airy cupboard. Keeping a spare set to hand means there is always a clean sheet ready when the other is in the wash.
• Protecting the fit. The fully elasticated edge is what gives the secure hold, so avoid dragging or overstretching the corners when you fit and remove the sheet. Treated gently, that elastication keeps its grip for the long term.

Fitted Sheet FAQs

What is a fitted sheet?

A fitted sheet is a bottom sheet with elasticated corners that wrap around and grip the mattress. It stays securely in place for a smooth, tidy finish, unlike a flat sheet, which has no elastic. Every Posh Tag fitted sheet is fully elasticated and made at 40cm deep, so it holds firmly to modern mattresses.

What size fitted sheet do I need?

Match the sheet to your mattress size. In the UK the standard sizes are Single (90 × 190cm), Small Double (120 × 190cm), Double (135 × 190cm), King (150 × 200cm) and Super King (180 × 200cm). If you are unsure, check the label on your existing bedding or measure your mattress and compare it to these dimensions, then choose the matching size.

What is an extra deep fitted sheet?

An extra deep fitted sheet is made with a greater depth so it fits taller mattresses. Every sheet we make is 40cm deep, which comfortably suits deep, thick, hybrid, memory foam and pillow top mattresses, as well as mattresses with a topper. The extra depth lets the sheet tuck fully underneath instead of straining at the corners.

Will a fitted sheet fit over a mattress topper?

Yes. Because our fitted sheets are made at 40cm deep, they are designed to fit a mattress and topper together, as long as the combined height is 40cm or less. Adding a topper raises the height of your bed, which is exactly why an extra deep sheet matters.

Why do fitted sheets come off during the night?

Almost always because the sheet is not deep enough for the mattress. If the depth is too shallow, the corners cannot tuck properly underneath and slip loose as you move. A deeper 40cm sheet with a fully elasticated edge, like ours, grips all the way around and stays put.

How often should I replace fitted sheets?

Replace a fitted sheet when the fabric begins to thin or the elastic loses its grip and the sheet no longer sits securely. Owning two sets and rotating them shares the wear and extends the life of both, so you replace them far less often.

What is the difference between a fitted sheet and a flat sheet?

A fitted sheet has elasticated corners and wraps around the mattress to stay secure, forming the base of the bed. A flat sheet is a plain rectangle with no elastic, used as a top layer between you and the duvet, or tucked in by hand. Many people use a fitted sheet as the base and add a flat sheet on top only if they prefer the extra layer.

Can extra deep fitted sheets fit standard mattresses?

Yes. A 40cm sheet fits a standard mattress perfectly well; the fully elasticated edge simply gathers any extra material neatly beneath the mattress. This is why we make every sheet extra deep, so a single specification suits both standard and deep beds.

How do I measure my mattress depth?

Measure straight down from the top surface of the mattress to its underside at the side, and include any topper or integrated pillow top in that figure. If the total is 40cm or less, our fitted sheets will fit.

Are hotel fitted sheets different from ordinary ones?

Hotel fitted sheets are chosen for a crisp, secure fit and hard-wearing durability, because they are washed constantly and still need to look immaculate. We manufacture ours to that same standard, so you get the hotel feel and longevity at home.

Why buy fitted sheets direct from the manufacturer?

Buying manufacturer direct means the sheet comes straight from our Rochdale factory to you, with no importers or middlemen adding cost. You get better quality because we control how every sheet is made, and better value because you are paying for the sheet rather than a supply chain.

Explore More Posh Tag Bedding

Build the perfect bed from the mattress up. Add one of our Mattress Toppers for an extra layer of comfort, and protect your investment with a Mattress Protector. Finish the bed with our Pillows and Duvets for a complete, coordinated feel, all made with the same manufacturer-direct quality. If you would like a hand choosing, our Bedding Buying Guides explain sizes, depths and materials in plain English.

Bring the Hotel Feel Home

Great sleep starts with a properly made bed, and it starts with the sheet. Choose your size, pick from six colours and enjoy an extra deep 40cm fit that stays smooth and secure night after night, made in Britain by a manufacturer who cares about the details. This is hotel-quality bed linen, direct from our Rochdale factory and priced without the middlemen — luxury without the luxury price tag.