Short answer: Choose an insert that matches the size on your pillow cover's label. For a fuller, plumper look, choose an insert up to 2 inches larger than the cover, as long as the cover's zipper and seams allow it. For example, a 12"×20" cover works with a 12"×20" insert, or a 14"×22" insert for a fuller fill.
Why go slightly bigger?
An insert that is exactly the size of the cover can leave the corners looking flat or empty. A slightly larger insert fills the corners and gives the pillow a firmer, more tailored shape. Going more than 2 inches larger can strain the zipper and seams.
Lumbar insert size chart
| Cover size | Insert for an exact fit | Insert for a fuller look |
|---|---|---|
| 12" × 20" | 12" × 20" | 14" × 22" |
| 12" × 24" | 12" × 24" | 14" × 24" |
| 14" × 22" | 14" × 22" | 14" × 24" |
| 14" × 24" | 14" × 24" | 16" × 26" |
| 14" × 36" | 14" × 36" | Exact fit recommended |
| 16" × 26" | 16" × 26" | Exact fit recommended |
| 20" × 36" | 20" × 36" | Exact fit recommended |
All of these sizes are available in our Pillow Inserts, sold in packs of 1 or 2.
How to measure a cover with no label
- Lay the cover flat with the zipper closed.
- Measure from seam to seam across the width, then across the length. Do not include any trim or flange.
- Round to the nearest inch and use the chart above.
Where to use each size
- 12" × 20" and 12" × 24": the classic lumbar size for armchairs and the front row on a sofa.
- 14" × 22" and 14" × 24": a little taller, good for deeper sofas and reading chairs.
- 14" × 36": a long lumbar for the front of a bed, a bench or a wide sofa.
- 16" × 26" and 20" × 36": larger sizes for beds and oversized seating.
When your insert arrives
Inserts are compressed for shipping, so they can look flat at first. Remove the packaging, spread the fill by hand, and fluff it from every side. Give it some time to recover its full shape before putting it in the cover.
FAQ
Should a pillow insert be bigger than the cover?
It can be. An insert up to 2 inches larger gives a fuller look. An exact match gives a flatter, softer look.
Do pillow covers come with inserts?
Usually not. Our pillow covers are sold without inserts, so you can choose the fill you like.
Why does my new insert look flat?
It was compressed for shipping. Fluff it well and let the fill expand before use.
What is the insert made of?
Our inserts have a soft brushed polyester shell and a resilient fiber fill that recovers its loft with regular fluffing.