---
title: "Chair Cushion Replacement: Sage T-Cushion and the Foam Inside"
url: "https://cushionguide.com/readings/sage-t-cushion-cream-armchair-sleeping-cat/"
section: "Readings"
author: "Margaret Holloway, The Piping Queen of Newport"
author_url: "https://cushionguide.com/masters/maggie/"
published: "2026-05-18"
updated: "2026-09-24"
keywords: "chair cushion with ties, chair cushion, custom size cushion, made to measure cushion, pet friendly cushion, foam insert, custom cushion covers"
---

# A sage T-shaped chair cushion, a sleeping cat, and what belongs under the cover

*Right, then. The cat has approved the fabric. The foam is our department, and it deserves more thought than most people give it.*

> **The quick answer:** A replacement T-cushion for an armchair should be solid seat foam with a stated density, about 2.0 lb/ft³ (32 kg/m³) for daily use, with firmness chosen separately. Density says how long foam lasts; firmness says how it feels. Match the old cushion's height, trace the T outline on paper, and choose a tight weave if a cat sleeps there.

![Sage green T-shaped seat cushion with self piping on a cream armchair, tabby cat asleep on top, fiddle-leaf fig nearby](https://cushionguide.com/media/dining-chair-cushions/sage-t-cushion-cream-armchair-sleeping-cat-1600.webp "A sage T-cushion replaces a worn armchair seat and adds a new color. The notched front fits snugly around the arms.")

## The palette, pulled from one armchair

- Sage green — #9CAF88 — The new seat, and the only strong color on the chair.
- Cream linen — #EDE6D6 — The frame stays; the seat becomes the accent.
- Fig-leaf green — #4F6B3A — A darker green companion from the plant.
- Walnut — #5C4033 — The coffee table, warm and low.
- Tabby — #A07850 — Not ordered, but always present.
- Cream wool — #F3EEE3 — The rug that softens the floor under it all.

## Why sage, why the T, and what sits under the cover

Replacing only the seat is the cheapest way to change an armchair's color, and the cat does not care either way.

This photograph shows a new [chair cushion](https://cushionguide.com/cushions/dining-chair-cushions/) in sage on a cream linen armchair. A dining chair cushion with ties needs spindles to knot to; a T-cushion needs none, because the arms hold it. The frame stays exactly as it was; the seat becomes the accent. Sage sits well on cream, and the fiddle-leaf fig in its woven basket gives it a darker green companion across the room. The walnut coffee table, with a stack of books and a ceramic mug within reach, tells you what this chair is for. The cream wool rug keeps the whole corner soft in the afternoon light.

The shape is a T. The cushion widens in front of the arms so it fills the seat edge to edge. Those two inside corners are where replacements go wrong, and the self piping is what keeps them crisp instead of rounding off.

The tabby asleep on top is the real test. A tight, flat [performance weave](https://cushionguide.com/fabrics/performance-and-pet-friendly/) resists claws better than a loose bouclé, whose loops catch. No weave lasts forever under a cat, dear, but a tight one gives the claws nothing to hook. What does your cat sleep on now?

Now, under the cover. A seat cushion takes solid foam, not the shredded fill used in back pillows. Ask for the density number: around 2.0 lb/ft³ (32 kg/m³) is a solid everyday seat foam, and it is the workshop's standard because it doesn't sag. Density predicts how long foam lasts, not how firm it feels, so choose firmness as its own decision. The [foam firmness finder](https://cushionguide.com/studio/foam-firmness-finder/) helps with that part.

Thickness is the third number. Match the cushion you are replacing so the seat stays level with the arms. Foam settles when you sit: a 3 in (7.5 cm) cushion rides nearer 2 1/2 in (6.5 cm). I once ordered by the thickness I wished an old cushion had been, and the chair looked as if it were wearing a hat. Trace the old one on paper instead.

## Pinned by Maggie, corner by corner

Five pins, from the T-shaped notch at the arm to the books waiting on the coffee table.

1. **T-shaped notch**: The cushion widens in front of the arms so it fills the seat edge to edge.
2. **Sleeping tabby**: A tight pet-friendly weave resists claws better than a loose bouclé.
3. **Piped front**: Self piping keeps the T-shape crisp at the tricky inside corners.
4. **Fiddle-leaf fig**: The fig gives the sage seat a green companion in the room.
5. **Books and mug**: A coffee table within reach sets the chair up for reading.

## Two tiny seats and an address with a missing line

A buyer messaged the workshop needing two very small seat cushions, 9 7/8 x 13 in (25 x 33 cm) and only 2 in (5 cm) thick, in beige from the color chart. On a pad that thin you feel the seat underneath if the foam is soft, so thin cushions want the sturdy kind.

The cushions were made promptly. The delivery was not. The carrier couldn't find the door because the address was incomplete, so the parcel went all the way back to the workshop and out again, with the buyer paying the second shipping.

My checklist, learned the hard way by other people: full street address, apartment or unit number, gate or door code, and a phone number the driver can call. For the seat itself, the [dining chair pad measuring guide](https://cushionguide.com/guides/dining-chair-pad-measurements/) covers the rest.

## The cutting ticket

|   |   |
|---|---|
| Cushion | Replacement T-cushion for an armchair seat |
| Shape | T outline, wider in front of the arms |
| Edge | Box edge with self piping |
| Fabric | Tight sage performance weave |
| Fill | Solid seat foam, about 2.0 lb/ft³ (32 kg/m³) |
| Firmness | Chosen separately from density |
| Thickness | Match the old cushion's height |
| Template | Paper tracing of the old cushion or the seat deck |
| Best for | Armchairs with a resident cat |

## Buyer questions

**A common question:** Could you make a chair cushion about 5 in (13 cm) thick, with ties at the back?

**The workshop's answer:** Yes. The workshop asked for a photo of the chair and its measurements, a 21.5 in (55 cm) seat base in that case, then sent close-up photos of smoke, beige, brown and mint along with a linen swatch card to choose from.

**A common question:** My dining chairs have back supports that come down into the seat. Can the pads be notched around them, or arched at the back?

**The workshop's answer:** Notches for back supports can't be made reliably from a distance, so the workshop suggested an arched back edge. On one drawing a 20 in (51 cm) chord with a 12.5 in (32 cm) radius gave a 5 in (13 cm) arc, with sharp corners where the arc meets the sides, about 1 in (2.5 cm) rounded front corners, the zipper along the arc, ties inset 4.5 in (11 cm) and a non-slip base.

**A common question:** Can I buy just the round ottoman from the floor lounge chair set? And are the chairs heavy?

**The workshop's answer:** Yes, the small round ottoman can be ordered on its own through a custom order link. The corduroy floor lounge chairs are light, easy to pick up and carry to another room.

> Self piping keeps the two inside corners of a T-cushion crisp where the seat widens in front of the arms; without it they round off.
>
> — Maggie

> **Tailor's margin:** Seat foam density, like 2.0 lb/ft³, says how long a cushion lasts. Firmness says how it feels. Ask for both numbers before ordering.

## Questions buyers ask next

### Does foam density tell me how firm a chair seat will feel?

No. Density predicts how long foam lasts; firmness is measured separately, often as ILD. A foam around 2.0 lb/ft³ (32 kg/m³) can be made soft, medium or firm, so ask for both numbers and decide each on its own.

### How do I replace a T-cushion without the original pattern?

Trace the old cushion or the bare seat deck on paper, mark the front edge, and label the wide front and the narrow back. Guessing the steps of a T outline from a tape measure alone is where replacement cushions go wrong.

### Is a performance weave better than bouclé for a cat's favorite chair?

A tight, flat weave gives claws little to hook, while bouclé's loops catch and pull. No fabric stays claw-resistant for good, so choose the tightest weave you like and a cover you can clean easily.

## Related at the atelier

- [Chair Cushion Colors in Daylight: Burgundy, Sage and Denim Blue](https://cushionguide.com/readings/burgundy-sage-denim-box-cushions-stacked-oak-bench/): Judge chair cushion colors in daylight on your own seat, not on a screen.
- [Chair Cushion Foam: Why This Oat Desk Seat Is Thin and Firm](https://cushionguide.com/readings/oat-woven-chair-cushion-chocolate-piping-desk/): A desk or dining chair cushion is usually 2 to 3 in (5 to 7.5 cm) thick, so it needs firm foam: a thin cushion must be firmer than a thick one to feel as supportive.
- [Round Chair Cushion with Ties for a Black Bentwood Chair](https://cushionguide.com/readings/round-dove-gray-pad-black-bentwood-chair-paris/): A round chair cushion with ties should be cut as a circle just inside the chair's rim, kept thin, and made in a plain color when the room already carries pattern.
- [Measuring a T-cushion for an armchair or sofa, ear to ear](https://cushionguide.com/guides/t-cushion-replacement-measuring/): For a T cushion replacement, measure six things: the front width ear to ear, the back width between the arms, the total depth, the ear depth from the front edge to where the arm begins, the step on…
- [Replacing a discontinued cushion by copying the one you have](https://cushionguide.com/guides/copy-existing-or-discontinued-cushion/): To copy an existing or discontinued cushion, measure the old one seam to seam and the frame it sits in, note the edge style, piping, zipper side, ties and true thickness, and photograph it beside a…
- [Where does the zipper go on a trapezoid cushion, and will the foam come out?](https://cushionguide.com/answers/trapezoid-cushion-zipper-placement/): Ask for the zipper on the shorter back edge and the workshop puts it there, so the long front edge stays clean.
- [How to order a custom cushion size that isn't in the size menu](https://cushionguide.com/guides/custom-size-cushion-not-on-menu/)

*Stitch straight — Maggie*

---

Written by Margaret Holloway (https://cushionguide.com/masters/maggie/) for CushionGuide (https://cushionguide.com/about/). The site explains made-to-measure cushions and the partner workshop makes them; measurements are in inches first. This Markdown mirrors the page at https://cushionguide.com/readings/sage-t-cushion-cream-armchair-sleeping-cat/