---
title: "Daybed Back Cushions and Bolsters: Styling a Daybed as a Sofa"
url: "https://cushionguide.com/guides/daybed-back-cushions-sofa-look/"
section: "The Pattern Room"
author: "Élodie Marchand, The Colorist of New Orleans"
author_url: "https://cushionguide.com/masters/elodie/"
published: "2026-01-05"
updated: "2026-09-24"
keywords: "daybed back cushions, daybed cushion set, daybed bolsters, hemnes daybed back cushions, daybed sofa look"
---

# How to make a daybed look like a sofa with back cushions and bolsters

*A daybed becomes a sofa the moment its back stands up, my friends. Here are the back cushions, the pair of bolsters and the single accent pillow that do it, in sizes and colors taken from real orders.*

> **The quick answer:** To make a daybed look like a sofa, dress the mattress in a fitted cover, line the wall with back cushions about 20 in (50 cm) tall, and finish each end with a bolster or rectangular side pillow. Split the mattress length between the backs, so a twin-length bed takes two. Add one accent pillow, and choose foam-filled backs if you sit upright.

![White Hemnes daybed with green and white striped cotton covers in a kitchen nook by a glass cabinet and checkerboard rug](https://cushionguide.com/media/ikea-hemnes-daybed-covers/green-striped-hemnes-daybed-breakfast-nook-1600.webp "Green and white striped covers turn a Hemnes daybed into the sofa side of a breakfast nook. A glass cabinet, round table and checkerboard rug complete the relaxed kitchen corner.")

## Why a bare daybed still reads as a bed

A bare daybed is a mattress with a railing, and the eye knows it. Give it a back and two arms and it reads as a sofa by day, while it still sleeps a guest at night.

The workshop's daybed sets do it with three parts: a fitted, zippered mattress cover, two filled back cushions and two filled bolster armrests. The requests rhyme: *make it look like a couch*, *one long back for sitting upright*, *structured rather than loose*. The [daybed cushions](https://cushionguide.com/cushions/daybed-cushions/) collection shows the whole family; this Pattern is about the back row.

## Dressing a daybed as a sofa, in seven steps

1. **Measure the mattress: length, width and height**: A twin daybed mattress runs about 39 x 75 in (99 x 190 cm), a [twin XL](https://cushionguide.com/glossary/#twin-xl) 38 x 80 in (97 x 203 cm), and the US IKEA Hemnes holds two twins of 38 1/4 x 74 1/2 in (97 x 189 cm). Stacked mattresses? Add their heights; one cover is made to the combined height. The frame itself is in the [Hemnes cover measuring Pattern](https://cushionguide.com/guides/ikea-hemnes-daybed-cover-measuring/).
2. **Divide the length between the back cushions**: Backs are sized by dividing the full span so they sit flush, end to end. A 78 3/4 in (200 cm) daybed takes two backs of 39 x 16 in (100 x 40 cm); one US Hemnes set used two of 17 x 36 in (43 x 91 cm). A custom set paired a 76 x 36 in cover with three 22 x 22 in (56 x 56 cm) backs. Standard Hemnes backs are L-shaped, turning the corners to wrap the sides.
3. **Set the height at about 20 inches**: Standard back pillows are about 16 in (40 cm) tall and 4 in (10 cm) thick; daybed sets use about 20 in (50 cm), measured from the top of the seat. The workshop won't go below 16 in, where a back stops supporting you, and 27 1/2 in (70 cm) is too tall. The exception: backs 26 in (66 cm) tall for a mattress set against a window. Details in [back cushion height](https://cushionguide.com/guides/back-cushion-height-sizing/).
4. **Choose the fill for how you sit**: A twin mattress is 38 to 39 in deep, far deeper than a 22 to 24 in lounge seat, and a back cushion takes only about 3 in off that. So the back has to hold you. Foam-filled backs and bolsters stay structured for sitting upright; soft-filled ones are plumper, better for reading half lying down.
5. **Finish the ends: bolsters or side pillows**: The full set comes with round [bolster armrests](https://cushionguide.com/glossary/#armrest-bolster), for example 8 in (20 cm) across and 37 1/2 in (95 cm) long. They can be swapped for rectangular side pillows, and mixing is fine: one buyer ordered one long back and a single bolster.
6. **Build the palette: body, trim, one accent**: The eye sits down first, so settle color before stitching. Body fabric goes on the cover and the backs. Piping is included and can be another color: a burnt-orange cord on cream [velvet](https://cushionguide.com/fabrics/velvet/), gold piping on teal, honey-gold striped backs over a plain taupe seat. Then add one accent pillow in a third tone or a new texture. One accent says sofa; five say bed again.
7. **Order the set, or only the backs**: With the full set you give only the mattress size; backs and bolsters are proportioned from it, and a different back height can be requested. Already dressed your daybed? Backs and bolsters are sold without the cover, quoted on request, and a matching back can be added later by quoting your original fabric code.

## Round bolster or rectangular side pillow

|   | Round bolster | Rectangular side pillow |
|---|---|---|
| Size seen in real orders | 8 in (20 cm) across, 37 1/2 in (95 cm) long | 12 x 30 in (30 x 76 cm) |
| How it reads | Soft and traditional, a daybed dressed up | Squarer and more tailored, closer to a sofa arm |
| In the full set | [yes] Standard | [part] On request, in place of the bolsters |

## Terracotta with cream trim, on two stacked mattresses

A buyer in the US wanted the full Hemnes set in terracotta with cream trim, with rectangular side pillows instead of round bolsters. The mattress was 74 1/2 x 38 1/4 in, two 4 3/4 in layers, so the workshop advised one cover made for 9 1/2 to 10 in rather than 8 in, to look filled, not loose. Backs: 17 x 36 in. Side pillows: 12 x 30 in.

Terracotta is a warm clay red that turns rosy by lamplight, and the cream cord draws each outline without competing. The buyer ordered samples in two rounds first, since each sample order holds five codes.

## Where daybed sofa sets go wrong

- ✗ Two covers for two stacked mattresses: they come out too tight. One cover sized to the combined height fits.
- ✗ Guessing the cover height. Two 4 3/4 in mattresses take a 9 1/2 to 10 in cover, not 8 in.
- ✗ Backs with nothing to hold them. Ties can tie a backrest to the seat, and double piping gives backs enough structure to stay put; see [keeping back cushions upright](https://cushionguide.com/guides/back-cushions-staying-upright/).
- ✗ Extras typed into the size box, where they get missed. Ask for ties in writing and check the photo sent before shipping.
- ✗ Fabric chosen for looks alone. Corduroy ribs can split under hard daily use; performance linen or velvet wear better on a daybed sat on every day.

> **Tailor's margin:** Daybed back cushions look right about 20 in (50 cm) tall. Below 16 in (40 cm) they stop supporting you; 27 1/2 in (70 cm) is too tall.

> Two stacked twin mattresses need one daybed cover sized to their combined height, 9 1/2 to 10 in; two separate covers come out too tight.
>
> — Élodie

## Filling a 39 in deep daybed: pillows, foam backs or a wedge

| Back option | How it fills the depth | Look and upkeep |
|---|---|---|
| 3 or 4 large square pillows, 24 to 26 in | Soft layers against the wall | Relaxed; needs regular plumping |
| Foam backrests, about 20 in tall | Firm, even line across the length | Crisp; stays put |
| Wedge backs | Thicker at the bottom, pushes you forward | Tailored; supports deep seats |
| Round bolsters at each end | Adds arms, not depth | Pairs with any of the above |

## Buyer questions

**A common question:** What comes in the Hemnes daybed cover set? Is the mattress included?

**The workshop's answer:** The full set is one fitted, zippered mattress cover made to your mattress size, two filled back pillows and two filled bolster armrests, ready to use. The mattress and foam are not included. Piping comes at no extra charge and can be a different color from the cover.

**A common question:** My daybed has two mattresses stacked. Can one cover fit both?

**The workshop's answer:** Yes. Order one cover in the mattress length and width plus the combined height. Two 4 3/4 in twins total about 9 1/2 in, so choose a 9 1/2 to 10 in cover, not 8 in. A stacked pair once made as two separate covers came out too tight; a single 31 1/2 x 79 x 9 1/2 in cover fixed it.

**A common question:** Will the Hemnes cover set fit a Brimnes, a standard twin or a thicker mattress?

**The workshop's answer:** Yes. The set is designed around the Hemnes but made to measure, so it fits a Brimnes, a standard twin or any custom size, including mattresses 8 in or 9 1/2 in thick. Write length, width and thickness in personalization.

**A common question:** Can I buy the L-shaped corner backrests alone to turn a twin daybed into a sofa?

**The workshop's answer:** Yes. Each L-shaped backrest covers a 39 x 39 in (100 x 100 cm) corner along the L and stands about 15 in high, so two span a 39 x 79 in sofa or a 75 x 38 in daybed. They have no hook-and-loop tape or other attachments, so they work as standalone cushions.

## Questions buyers ask next

### How tall should back cushions on a daybed be?

About 20 in (50 cm) from the top of the seat, the height the workshop's daybed sets use. Standard back pillows are 16 in (40 cm), the lowest it makes for proper support, and 27 1/2 in (70 cm) is too tall.

### How many back cushions does a twin daybed need?

Two, in most cases. Backs are sized by dividing the mattress length so they sit flush end to end: a 78 3/4 in (200 cm) daybed takes two 39 in backs. Longer custom daybeds can take three, such as three 22 x 22 in backs along a 76 in cover.

### Should daybed back cushions be foam or soft-filled?

Foam-filled if the daybed is mostly for sitting upright: the back stays supportive and structured instead of slumping. Soft-filled backs are plumper and more relaxed, which suits lounging. Say which look you want when you send your sizes.

### Can a daybed back cushion double as a headboard?

Yes, as a soft one. Backrests are made without a rigid board, so they lean or hang rather than screw to the wall. Ties on the top corners let one hang from hooks or a rail.

## Related at the atelier

- [One daybed, three jobs: a cushion set for sofa days and guest nights](https://cushionguide.com/concepts/daybed-sofa-cushion-sets/): A daybed cushion set that works as a sofa is a fitted mattress cover, two back cushions about 20 in (50 cm) tall and a bolster at each arm.
- [Daybed Cushion in Mauve: Where to Spend and Where to Save](https://cushionguide.com/readings/mauve-cushion-carved-french-daybed-arched-window/): On a daybed cushion, spend on the cover fabric and the back support, and save by keeping a mattress that is still sound.
- [Raspberry Daybed Cushion and Bolster Against a Slate Gray Wall](https://cushionguide.com/readings/raspberry-daybed-cushion-bolster-slate-gray-wall/): On a deep daybed, set the bolster back against the wall so the seat stays wide enough to sit cross-legged, and choose cushion thickness by the seat height it makes with the platform.
- [Daybed Cushions in Taupe and Cream Stripe on a Low Oak Platform](https://cushionguide.com/readings/taupe-cream-stripe-oak-daybed-cushions/): Run the stripe front to back on a daybed seat cushion and top to bottom on the back cushions, and a shallow platform looks deeper and taller.
- [How can I make a daybed look like a sofa with back cushions?](https://cushionguide.com/answers/make-daybed-look-like-sofa-back-cushions/): To make a daybed look like a sofa, order a fitted mattress cover with back cushions.
- [Can I mix fabrics, like a different fabric for the piping or sides?](https://cushionguide.com/answers/mix-fabrics-contrast-piping-sides/): Yes, you can mix fabrics: every fabric family can be used for bench cushions and daybed mattress covers, and families can be combined, such as a linen body with velvet piping or one fabric on the…
- [How to measure an IKEA Hemnes daybed: two stacked mattresses, one cover](https://cushionguide.com/guides/ikea-hemnes-daybed-cover-measuring/)
- [What to measure for a custom daybed mattress cover](https://cushionguide.com/guides/daybed-mattress-cover-measurements/)

*With color and care — Élodie*

---

Written by Élodie Marchand (https://cushionguide.com/masters/elodie/) 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/guides/daybed-back-cushions-sofa-look/