CushionGuide

A Reading by NateBay Window Cushions

Olive gold velvet on a trapezoid bay window seat: how it holds up to dinner, dogs and daylight

A trapezoid cut to the bay, a brown welt matched to teak, and a dining table right beside it. Here is the engineering read on how this seat will age, load by load.

Olive gold velvet trapezoid window seat cushion with brown piping in a dining bay beside a teak table and chairsSave
A bay seat that doubles as dining seating, in olive gold velvet with a brown welt to match the teak furniture.

The quick answer

A velvet bay window cushion beside a dining table ages well when it is specified for daily loads. Ask for a removable, machine-washable cover for spills, a non-slip base for kids sliding in and out, and the exact end-to-end size so it cannot shuffle. Expect the pile to show a light-and-dark shimmer where people sit.

The cushion, cut open

Cross-section through the depth, drawn for 4 in (10 cm) on 17¾ in, to proportion.1. Cover fabric: A removable, zippered cover. Machine wash at 86°F (30°C) on a gentle cycle and air dry.; 2. Piping: A fabric-covered cord sewn into the seams. It sits on the seam line, so it does not change the size.; 3. Fiber wrap: Polyester fiber (Dacron) batting around the foam: it fills the cover out and softens the edges.; 4. Foam core: About 2.0 lb/ft³ (32 kg/m³) high-resilience foam, firm to medium-firm, cut to the ordered size.; 5. Zipper: Along the back band, as hidden as possible. The zipper side faces down or toward the wall.; 6. Base panel: The underside of the cover. A non-slip fabric backing can cover the whole of it instead.1Cover fabric3Fiber wrap2Piping5Zipper6Base panel4Foam core2.0 lb HR foam4 in10 cm17¾ in deep · 45 cm
Cross-section through the depth, drawn for 4 in (10 cm) on 17¾ in, to proportion.
  1. Cover fabric. A removable, zippered cover. Machine wash at 86°F (30°C) on a gentle cycle and air dry.

  2. Piping. A fabric-covered cord sewn into the seams. It sits on the seam line, so it does not change the size.

  3. Fiber wrap. Polyester fiber (Dacron) batting around the foam: it fills the cover out and softens the edges.

  4. Foam core. About 2.0 lb/ft³ (32 kg/m³) high-resilience foam, firm to medium-firm, cut to the ordered size.

  5. Zipper. Along the back band, as hidden as possible. The zipper side faces down or toward the wall.

  6. Base panel. The underside of the cover. A non-slip fabric backing can cover the whole of it instead.

Pinned by Nate: five coordinates in the dining bay

Five pins, from the sash window at the top of the frame to the cream seat pad in the bottom corner, map where this seat meets the rest of the dining set.

Pinned: Olive gold velvet trapezoid window seat cushion with brown piping in a dining bay beside a teak table and chairs
  1. Olive gold velvet

    Velvet shows a light-and-dark shimmer where it is sat on.

  2. Brown piping

    Matches the teak so the window seat reads as part of the dining set.

  3. Teak table

    The bay seat becomes extra seating for guests.

  4. Cream seat pad

    Chair pads and window seat share a soft, warm palette.

  5. Sash window

    Painted frames stay plain so the velvet carries the color.

  1. Olive gold velvetVelvet shows a light-and-dark shimmer where it is sat on.
  2. Brown pipingMatches the teak so the window seat reads as part of the dining set.
  3. Teak tableThe bay seat becomes extra seating for guests.
  4. Cream seat padChair pads and window seat share a soft, warm palette.
  5. Sash windowPainted frames stay plain so the velvet carries the color.

Geometry first: a trapezoid that seats guests

The first measurement worth taking from this photo, partner, is the seat height. The bay seat sits at about the height of the teak dining chairs, which turns a window into extra places at the table. That was the whole design brief, and it was solved before anyone picked a fabric.

The cushion is a trapezoid, cut to the angled sides of the bay. Angles are just lengths in disguise: measure the back, the front and both sides, and the shape draws itself. The trapezoid cushion calculator does the arithmetic.

The edge is a box, and a brown contrast welt runs along it like a pencil line. Brown, not olive, because the table and chairs are teak. The piping ties the seat to the furniture, so it reads as part of the dining set rather than a separate window treatment.

Color against light: soft daylight comes through a sash window whose frames stay plain white, so the olive gold velvet carries all the color. The white paneled plinth, oak floor and cream rug keep the base quiet, and the cream seat pads on the chairs share the same warm palette.

One more reading, from the pile. Where people have sat, velvet shows a light-and-dark shimmer. On a family dining bay that is not damage; it is the seat keeping a record. Other bays measured the same way are in the bay window cushions section of the Atlas.

The daily-life test: six loads, six specs

LoadWhat happensWhat to specify
Sitting, every mealThe velvet pile shows a light-and-dark shimmer where it is sat onNothing extra; a mid shade like olive gold wears it as patina
SpillsFood and drink land at table heightA removable cover; velvet is one of the easy-clean ranges with machine-washable covers
Kids sliding in and outA loose cushion creeps on a painted plinthNon-slip base, written in the personalization note
DogsClaws and constant useFor heavy pet use, tightly woven fabrics from the pet-friendly chart
Front-edge perchingFirm foam can feel blocky at the edgeDacron-wrapped foam to soften the edge
SunA bay collects light from several sidesCheck swatches in your own daylight before ordering
A real project

96 inches on the long side, and a request for feathers

A buyer wrote in with a big trapezoid bay: 96 in (244 cm) on the long side, 55 1/2 in (141 cm) on the short side, 19 1/4 in (49 cm) deep. They wanted the cushion 4 in (10 cm) thick with 20% feather-wrapped foam, in a pale sand color.

The workshop doesn't do feather wrap and said so plainly. It offered Dacron-wrapped foam instead, for the same reason people ask for feathers: a softer surface over a firm core. For the color, it pointed the buyer to the sample listing so the sand could be checked in real daylight first.

The engineering note: feather wrap and Dacron wrap solve the same problem, a hard edge on firm foam. On a dining bay where kids perch on the front edge, that softer edge is what makes the seat feel like furniture. The Pattern on Dacron-wrapped foam has the details.

What does your bay measure on its long side, and did you take that number at the back or the front?

Buyer questions: grip, exact sizes and a lopsided bay

  1. A common question

    Can a bench cushion have a non-slip bottom, and does it come as a separate mat?

    The workshop's answer

    Yes, any bench cushion can have one: write 'non-slip base' in the personalization box along with your size and fabric code. It is not a separate piece; the underside of the cover itself is made from non-slip fabric, and it can be dropped from the order before production if you change your mind.

  2. A common question

    Should I send the exact seat size, or take a little off so the cushion fits?

    The workshop's answer

    Send the exact size of the seat, end to end; there is no need to go smaller. The workshop makes the cushion to the measurements you write and does not shorten them, so it fits properly.

  3. A common question

    My bay window seat isn't a rectangle and isn't symmetrical. Can you still make a cushion for it?

    The workshop's answer

    Yes, in any size and shape. The easiest route is to draw the seat outline on paper with every side measured and send a photo, or to trace the seat onto a paper template such as butcher paper. The workshop may ask for a few extra measurements before quoting.

On the cutting table: the dining bay seat

ProductTrapezoid bay window seat cushion
FabricVelvet in olive gold
PipingContrast welt in brown, matched to the teak
EdgeBox edge
ShapeCut to the bay's angled sides from four measured lengths
Seat heightClose to the dining chairs beside it
Fill optionFirm foam with Dacron wrap to soften the edge
GripNon-slip base built into the cover underside, on request
Best forA dining bay that doubles as guest seating

Order this cushion

Have it made

Have this made — ask Nate’s workshop

Precision starts on the phone. Give the workshop your measurements and they will read them back to you, edge by edge. — Nate

Leave your details and the workshop will call you to confirm measurements, fabric, foam and piping. No prices, dates or payment on this page: it is a request, not an order.

Fabric · Foam · Pipingwhat the workshop will confirm with you

Fabric
Velvet in olive gold
Foam
Firm foam with Dacron wrap to soften the edge
Piping
Contrast welt in brown, matched to the teak
Only for this request: no marketing calls or texts. Outside the US, add the country code.
In inches: length × depth × thickness, plus any angles or cut corners.

* Required. A member of the workshop team will call you to talk it through; nothing is charged and nothing is made until you have agreed on every detail with them.

We use these details only to answer this request and make your cushion: your name and contact details, the cushion details and photos you send, the page you came from and the ad or link that brought you, if any. The workshop that makes the cushions receives them. We don't sell them or share them for advertising, and we delete requests after 24 months. Privacy notice for requests.

Nothing is made or charged until you approve the details.

Want to pick the shape and add photos? Use the full quote form

Order a trapezoid bay window cushion at the exact end-to-end size; the workshop does not shorten your numbers, so an inch shaved off at home stays missing.

Nate

Questions buyers ask next

Why choose brown piping for an olive gold velvet seat?

Because the table and chairs are teak. A brown welt ties the bay seat to the wood, so it reads as part of the dining set rather than a separate piece. Take the piping color from the dominant wood in the room.

How high should a bay seat be when it doubles as dining seating?

Close to your dining chairs. Finished height is the platform plus the cushion, less a little settle: a 3 in cushion may ride about 2 1/2 in under you. Dining seats usually land around 18 in (46 cm), within 17 to 19 in.

What wraps the foam if feathers aren't an option?

Dacron, a polyester fiber batting. Wrapped around firm foam, it softens the top and the edge so the seat feels less blocky, which is the job most people have in mind when they ask for a feather wrap.

± 1/4 in — Nate