Duvet fillings
Fibre duvets: 250 g, 450 g and all-seasons, made in Spain
The duvet is the piece that keeps you warm. It always goes inside a duvet cover, which is the part you see and wash often, and that division of labour is what makes it the most practical system all year round: you change the cover when you want a different bedroom and change the duvet only when the season changes.
Happyfriday duvets have a microfibre outer and a siliconised hollow-fibre filling, breathable and very fluffy. They are washable at home and come in three weights to cover the whole year: 250 g for spring and autumn, 450 g for winter, and the all-seasons or DUO system, which combines two duvets in one. If you are not sure which one you need, here is the weight chart and the size guide.
3
Weights: 250 g, 450 g and all-seasons (120 + 250 g).
8
Sizes, from single to super king.
30 °C
Washable in a home washing machine. No dry cleaner.
Class I
OEKO-TEX® Standard 100, the standard required for baby articles.
Duvet, quilt or bedspread: which is which
People often use these words loosely, and that is where most of the confusion comes from: they are different pieces and are not used the same way. Once that is clear, choosing is easy.
Duvet
A plain microfibre shell with the fibre inside, spread across stitched channels so it does not shift. It always goes inside a duvet cover.
This is what you will find on this page
Quilt
A single closed piece, with the filling fixed inside and the outer side already finished. It has no cover: it goes straight over the sheets. Less versatile, but there is nothing to put together.
Bedspread
A thin quilted layer, 100 g/m². Light on warmth, big on style. It is the spring and summer layer, or the throw-over you take off at night in winter.
| Duvet | Quilt | Bedspread | |
|---|---|---|---|
| Needs a cover | Yes, always | No | No |
| Filling | 250 g, 450 g or all-seasons | 300 g/m² fixed | ≈100 g/m² |
| Outer | Plain microfibre, never on show | Reversible microfibre, printed or plain | Printed cotton |
| Season | All year, changing the weight | Autumn and winter | Spring and summer |
| Changing the look | Changing the cover | Turning it over | Buying another bedspread |
The duvet is the piece that changes least, and nobody sees it. What refreshes the bedroom is the cover, and that is where the fun is. Take a look at our duvet covers to dress it. If you would rather have one piece that keeps you warm and decorates with nothing to assemble, what you want is a quilt.
Which duvet weight to choose
Weight measures the grams of fibre per square metre and it is what decides how warm a duvet is. More weight, more warmth and more heft; less weight, cooler and lighter. The right reference is not the temperature outside: it is your bedroom's in the small hours, with the heating already off.
Happyfriday has three options, and together they cover the whole year:
| Filling | Warmth | Bedroom temperature | Who it suits |
|---|---|---|---|
| 250 g | Moderate | 16–21 °C | Spring and autumn. Very well-heated bedrooms or hot sleepers. |
| 450 g | Maximum | Below 16 °C | Winter nights. The best-seller in the collection. |
| All-seasons | Adjustable | The full range | Two duvets (120 + 250 g) used separately or together. One system for the whole year. |
Torn between 250 and 450?
If your bedroom has central heating and does not drop below 18 °C at night, the 250 g is enough for most of the year. If you sleep with the heating off, the room faces north or you are the type who wakes up reaching for a blanket, go for the 450 g.
And if you would rather not choose, that is what the all-seasons systemis for: buy once and adjust the warmth every season. For the odd night when you are a little cold, a throw at the foot of the bed sorts it without changing anything else.
The all-seasons or DUO system: two duvets in one
Also known as the DUO system, it is the most complete solution and the one that needs least thought. Instead of one duvet there are two: a light 120 g and a medium 250 g, which fasten together and are used separately or combined depending on the time of year.
How to use it through the year
The 120 g on its own in spring and on mild autumn nights. The 250 g on its own for full autumn and chilly spring. Both together add up to 370 g and cover winter, even in unheated bedrooms. One cupboard, three levels of warmth.
Why it pays off
Buying separately you would need two duvets and room to store both. Here they take up the same space, wash the same way and you do not have to decide in September whether this winter will be cold. It is the option we recommend for a new home or a guest room: it covers every scenario without knowing in advance who will sleep there.
When it is not the best idea
If you know for certain your bedroom is cold all winter, the 450 g is warmer than the two combined and is a single piece to handle. And if you live in a very warm flat and have never needed more than a sheet, the 250 g on its own is simpler and cheaper.
Size guide: which duvet fits your bed
Choose the size by the width of your mattress, not the bed frame, and it has to match the duvet cover you will put on it. The rule is to add 30 to 45 cm on each side so the duvet drops over the edges: too short and it rides up and the cold gets in at the sides.
Eight sizes cover every bed in the range:
| Mattress width | Duvet | Drop per side | Note |
|---|---|---|---|
| 80 cm mattress | 135/140 × 200 cm | 30 cm | The snug size. Trundle beds, bunks and low mattresses. |
| 80 / 90 cm mattress | 150 × 220 cm | 30–35 cm | The standard single. The 220 cm length leaves room at the foot. |
| 105 cm mattress | 180 × 220 cm | 37 cm | Wide single, very common in teenagers' rooms. |
| 120 cm mattress | 200 × 200 cm | 40 cm | Square size. Check the length if your mattress is over 190 cm. |
| 135 / 140 cm mattress | 220 × 220 cm | 40–42 cm | Double. One size for both widths. |
| 150 / 160 cm mattress | 240 × 220 cm | 40–45 cm | King size. The best-selling double size. |
| 180 / 200 cm mattress | 260 × 220 cm | 30–40 cm | Super king, for a 260×220 duvet cover. |
| 180 / 200 cm mattress | 260 × 240 cm | 30–40 cm | Super king, for a 260×240 duvet cover, 20 cm longer. |
Microfibre outside, siliconised hollow fibre inside
The materials decide how warm a duvet is for its weight, how well it breathes and how many washes it takes before losing loft. In our duvets everything is synthetic, and that is a choice, not a cut corner.
Outer: breathable microfibre
The shell is microfibre, with a yarn much finer than conventional fabric. That does two things: it keeps the fibre inside without it escaping through the seams, and it lets the moisture your body produces at night pass through instead of building up. A duvet that does not breathe is what causes that damp, hot feeling in the early hours.
Filling: siliconised hollow fibre
Hollow because each filament holds air inside, and it is that air that insulates: that is why it is so warm for so little weight. Siliconised so the fibres slide past each other instead of catching, which is what makes the filling spring back when you shake it rather than flattening. The result is fluffy and light, enveloping without weighing you down.
Washable at home
And it is washable in a home machine, which is not an option with a down duvet: that has to go to the dry cleaner every season.
Design notes
From our creative studio in Cocentaina, Alicante
The design you do not seeA duvet is the only piece on the bed that nobody looks at, and that changes the job completely: here there is no print to fall back on. What gets designed is the construction, and you notice it in daily use more than any pattern.
We work on three decisions: how the fibre is spread across stitched channels so it does not drift to the foot, the loft of each channel so it is equally warm from one side to the other, and the balance between weight and heft, which is what separates an enveloping duvet from one that squashes you. A well-built duvet goes unnoticed: it does not weigh you down, it does not lump and it is as warm in the middle as at the edges.
Happyfriday Design Team
Creative studio · Cocentaina, Spain
Made in Spain
Every piece is designed in our studio in Cocentaina (Alicante) and made up in workshops in Spain. All our textiles are certified OEKO-TEX® STANDARD 100 Class I: AITEX, an independent laboratory, tests them for substances harmful to health.
Own design
Made in Spain
OEKO-TEX® Class I
How to wash and care for your duvet
The beauty of the system is that the duvet rarely needs washing: the cover is what touches your body and goes in the machine every week. Once or twice a year is enough for the duvet. What shortens its life is not use: it is drying.
Air it for five minutes every morning
Pull back the bed and leave the duvet unstraightened while you get dressed. It is the most effective care and the least practised: it lets the night's moisture evaporate before it settles in the fibre.
Shake it once a week
Hold it by the short side and give it two or three shakes. Siliconised fibre regains loft as it moves, and spreads out evenly again across all the channels.
Wash at 30 °C on a delicate cycle
Neutral liquid detergent, no bleach, not too much fabric softener, gentle spin. For the 240 and 260 cm sizes you need a machine of 8 kg or more: packed too tight, it will not rinse properly and soap stays inside the fibre.
Dry flat and out of direct sun
Hanging it on a line makes the wet fibre slide down under its own weight and bunch at the bottom. In a tumble dryer, low heat and dryer balls to restore the loft. Never on a radiator.
Check it is dry inside
The shell dries long before the fibre. Feel the inside before you store it or put it in the cover: trapped moisture is what causes odours and, over time, flattening.
Frequently asked questions about duvets
What is a duvet and what is it for?
It is the padded piece that keeps the bed warm and always goes inside a duvet cover. The cover is the visible part and the one you wash often; the duvet is what insulates and is changed with the seasons. It is sometimes called a quilt, but it is not one: a quilt is on show and has no cover.
What duvet weight do I need?
It depends on your bedroom's temperature in the small hours. The 250 g is for spring and autumn, and is enough all year in homes with central heating. The 450 g is for winter, the right choice if you sleep with the heating off or feel the cold. The all-seasons system combines 120 and 250 g and covers all three situations in one purchase.
What is the difference between a duvet and a quilt?
A duvet has a plain shell and needs a duvet cover to dress it; a quilt is stitched on all four sides with the filling inside and goes straight over the sheets, with no cover. The duvet and cover system is more versatile, because you change the look of the bedroom by changing only the cover. A quilt is quicker to put on.
What size duvet do I need for my bed?
There are eight sizes. 135/140×200 for 80 cm mattresses. 150×220 for 80 and 90 cm. 180×220 for 105 cm. 200×200 for 120 cm. 220×220 for 135 and 140 cm (double). 240×220 for 150 and 160 cm (king). 260×220 and 260×240 for 180 and 200 cm (super king). The duvet size has to match the duvet cover.
How does the all-seasons or DUO system work?
The all-seasons system, also called DUO, is two duvets that fasten together: one of 120 g and one of 250 g. The light one is used on its own in spring, the 250 g on its own in autumn and chilly spring, and both together add up to 370 g for winter. It is the most complete option if you want a single purchase that works all year.
What are Happyfriday duvets made of?
A microfibre outer shell and a siliconised hollow-fibre filling, breathable and very fluffy. All synthetic: no feathers or down. Hollow fibre insulates thanks to the air inside each filament, and the silicone treatment is what lets it regain loft instead of flattening.
Are they suitable for people with allergies?
We cannot guarantee that a fabric will not cause allergies, because it depends on each person. Our textiles are certified OEKO-TEX® STANDARD 100 Class I: tested for harmful substances to the limits that apply to baby articles.
Can I wash the duvet at home?
Yes. Delicate cycle at 30 degrees, neutral liquid detergent, no bleach, not too much softener, gentle spin. For the 240 and 260 cm sizes you need a machine of 8 kg or more. Dry flat and out of direct sun, or tumble dry on low with dryer balls, and check it is dry inside before storing it.
How often should the duvet be washed?
Once or twice a year is enough. That is the advantage of the system: the duvet cover is what touches your body and goes in the machine every week, so the duvet gets very little dirty. What is worth doing is airing it every morning and shaking it once a week.
Do I need a duvet cover of the same size?
Yes, the cover and the duvet should be the same size. If the cover is bigger, the duvet moves around inside and creases; if it is smaller, it compresses the fibre and it loses loft and warmth. Many covers have ties in the inside corners to fasten the duvet and stop it shifting.
Can I use the duvet without a cover?
It is not recommended. The shell is plain and is not designed to be on show or to be in direct contact with your skin night after night, and without a cover you would have to wash the whole duvet every week, which is exactly what shortens its life. If you want a piece to use as it is, the answer is a quilt.
How do I look after a duvet?
What damages it most is drying at high temperatures, which flattens the fibre for good, and storing it in a plastic bag. A flattened duvet is no longer evenly warm across its surface.
How should I store the duvet in summer?
Wash it, check the fibre is completely dry inside and store it in a breathable fabric bag, somewhere dry and out of direct light. Never in a plastic bag or vacuum-packed for months: plastic traps moisture and long vacuum storage flattens the fibre.
Are Happyfriday duvets made in Spain?
Yes. The design studio is in Cocentaina (Alicante), and they are made up in workshops in Spain. The fabrics are OEKO-TEX Standard 100 Class I certified.
