FOAMERA · COLLECTION

Custom Trapezoid Cushions

4 products

About these cushions

Made to fit your bay window, not a size chart.A trapezoid has a wider edge and a narrower one, so it sits flush in a bay window, an angled bench or a tapered boat seat. Send us four numbers — front width, back width, depth, thickness — and we cut the angled sides to them exactly. Nothing taken off.

See my price Free swatches
32 kg/m³
High-density foam
1,000+
Fabrics across 39 collections
14 days
From delivery, to check the fit
A maker checking trapezoid cushion foam measurements with a tape before the foam is cut

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

Custom trapezoid bay-window seat cushion with a piped edge on a banquette bench

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

Pay your way Checkout is Shopify's own, so card details never touch our servers. Pay in instalments with Klarna or Affirm where your country supports them.
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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 an angled bay-window bench seat
1
Measure the seat it sits on A bay-window bench, an angled window seat, a tapered boat or RV seat, a built-in banquette — measure the frame the cushion will sit on, so the foam fills the whole seat, not a guess.
Hands writing trapezoid front and back width measurements in a notebook with a tape measure alongside
2
Measure the front and back widths separately A trapezoid's whole point is that its two widths differ. Measure the width right along the front edge, then again along the back edge, and note the depth down the centre — those are the numbers we cut the angled sides to.
A hand photographing an empty angled bay-window seat with a smartphone
3
Off-square angle? Send a photo A bay window wider on one side, an uneven taper, an off-square corner — send a photo and we'll tell you exactly which measurements we need from you.

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 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.

Teddy bouclé cushion fabricBouclé & teddy Wide-wale corduroy cushion fabricCorduroy Purple velvet window seat cushionVelvet Ticking stripe cushion fabricTicking stripe Linen-look cushion fabricLinen-look Striped weatherproof seat pads on garden dining chairsOutdoor weave

Find your colour before you find your size

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

Beige 260 Grey 362 Brown 183 Blue 243 Green 113 White 110

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 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 space was measured wrong, that isn't covered — but send a photo before you order and we'll help you get the numbers right.

How do I measure a trapezoid so the fit is right?+

Take four numbers: the front width, the back width, the depth from front to back, and the thickness. Measure each width right along its own edge — a bay window is often wider on one side, so the two aren't the same — and take the depth down the centre. We cut the angled sides straight to those figures. If the angle is unusual, send a photo before you order and we'll confirm the shape.

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 size, through the same configurator and the same checkout. If a piece 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 front and back widths or a photo of your bay window, bench or boat 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 angles are cut straight from your own template.
Email us

Get a free size check

Tell us about the space — we'll tell you the cushion.

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Cut to your sizeFree delivery to your door
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