FOAMERA · COLLECTION

Custom Semi Circle Cushions

3 products

About these cushions

Cut to the curve of your seat, not a standard size chart.Send us your numbers — the straight edge across, the depth to the curve, and the thickness — and we cut the half-round to them exactly. Nothing taken off.

32 kg/m³
High-density foam
1,000+
Fabrics across 39 collections
14 days
From delivery, to check the fit
A maker checking a semi circle cushion's diameter with a tape before the foam is cut

Before anything is cut, someone here checks your measurements by hand. Every order.

A custom half-round semi circle seat cushion cut and sewn to measure

Not cut to your measurements? We remake it, free.

We cut to the size you order — exactly, nothing deducted. If what arrives doesn't match, we remake it, free — within 14 days of delivery.

Spend over $250? Choose a free gift.

Every order above $250 comes with a free gift of your choice — a pillow cover or table runner worth up to $45, tucked in beside your cushion.

What it costs

No surprises between here and checkout

Your price is built while you measure. Here is every part of it — before you pay.

Free worldwide shipping Tracked from the workshop and handed to your address — not left at a depot. No shipping line ever appears at checkout.
TrackedNo minimumTo your door
Priced from your measurements Size, foam and fabric are the whole calculation. Nothing is added afterwards — and there's no quote form or sales call.

Size×Foam×Fabric=your price

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Measuring

Ten minutes with a tape measure

We cut to exactly the numbers you send us — nothing is deducted, nothing rounded up. So they are worth taking slowly.

Hands stretching a tape measure across the flat straight edge of a half-round seat
1
Measure the straight edge Run the tape along the flat side, end to end — that's the diameter of the half-round. It sets how wide the cushion sits on your bench, hearth or bay window.
Hands writing a semi circle cushion's depth measurement in a notebook
2
Then the depth to the curve From the middle of the straight edge, measure straight out to the furthest point of the curve. On a shallower D-shape that's less than half the width — write down exactly what you get.
A hand photographing a rounded step seat with a smartphone
3
Not a true half-round? Send a photo A bay-window front, a rounded step, a hearth that isn't a clean semi circle — send a photo and we'll template the exact curve before we cut.

Full measuring guide, shape by shape →

Inside the cushion

One solid block never glued scraps

32 kg/m³

≈ 2.0 lb/ft³ — the density we cut every seat from

Cheap cushions are filled with shredded or re-bonded offcuts: firm in week one, sagging by month six. Yours is cut from a single high-density block.

Density is how long it lasts. Firmness is how it feels. We publish ours; most sellers don't.

A cut block of grey 32 kg per cubic metre high-density foam, open-cell texture visible on the cut face
32 kg/m³ high-density block Cut on a CNC blade to your three numbers — one piece, no bonded offcuts.

What you'll choose at step 2

The configurator asks this after your measurements. Most seats want the first one.

Most chosen
Foam & cover The complete cushion: 32 kg/m³ core, sewn cover, zip. Pick this if you're starting from nothing or the old pad has gone flat.
Cover only
Keep your foam Your existing pad is still firm but the fabric is tired or stained. We sew a new cover to the foam you already have.
Foam only
Keep your cover The cover is fine, the seat has collapsed. We cut bare foam to size and you slip your own cover back on.

The fabric

Screens lie. Swatches don't.

1,000+ fabrics across 39 collections — indoor weaves, outdoor all-weather cloth, velvet, bouclé and linen-look. Filter by colour, then feel the real thing before you commit.

Find your colour before you find your size

1,000+ fabrics across 39 collections. Filter by colour on the fabric library:

Feel it before you commit

Colour on a screen is never the colour in your room. Swatches are free and we post them worldwide.

Independently tested

Certificates you can actually check

OEKO-TEX®
Standard 100

Tested for harmful substances — safe in contact with skin.

CertiPUR-US®
Foam certification

Low-VOC foam, so there's no off-gassing smell in the room.

ISO 9001
Quality management

An audited workshop process — not a marketing claim.

Your order

What happens after you press order

01 · CUT
Foam to your numbersOne block, cut to the three dimensions you entered.
02 · SEW
Cover by one makerPiping, zip and ties sewn by the same pair of hands.
03 · CHECK
Re-measured before packingChecked against your order sheet — every cushion, not a sample.
04 · SHIP
Tracked to your doorYour tracking link arrives as it leaves the workshop.

Before you order

Questions people actually ask

What does the 14-day fit guarantee cover?+

It covers our side of the job. We cut the foam to the measurements on your order exactly — nothing is deducted or rounded — and every order is checked by hand before it's cut. If what arrives doesn't match those numbers, send us a photo within 14 days of delivery and we cut you a new one, free. The window starts the day it reaches your door, not the day you order. If the seat was measured wrong, that isn't covered — but send a photo or your numbers before you order and we'll help you get the curve right.

How thick should a semi circle seat cushion be?+

For a bench or rounded step seat, 2–3″ of high-density foam is firm and comfortable; a decorative hearth or bay-window pad can be slimmer at 1–2″. You set the exact thickness of the half-round when you configure.

Can you make a D-shape where only one side is curved?+

Yes — a semi circle is exactly that: a flat straight edge with a curved front. If your seat is a shallower D-shape rather than a true half-round, give us the straight-edge width and the depth to the curve and we cut to it.

How long does it take to arrive?+

Everything is made to order. Your lead time is shown before you pay, not after, and the tracking link arrives the moment it leaves the workshop.

Can I order the cover only, or just the foam?+

Yes — full cushion, cover only, or bare foam cut to the curve, through the same configurator and the same checkout. If the pad has gone soft but the cover is still good, foam-only is usually all you need.

How do I clean it?+

Covers unzip and most fabrics sponge clean; for anything set in, a soft brush with mild soapy water and air drying does it. Care instructions for your specific fabric come in the box.

Not sure of your size? We'll check it — free.

Send the straight-edge width and depth, or a photo of the seat. The person who replies is the one who'll cut it.

  • Send a photoPut a tape measure in the shot — we read the size straight off it.
  • A real person, not a botStudio hours Mon–Fri, 2–11am ET (9am–6pm Istanbul).
  • Drew it on paper? Send the drawingOdd curves are cut straight from your own template.

Get a free size check

Tell us about the seat — we'll tell you the half-round.

Cut to your sizeFree delivery to your door
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