A worn-out cushion is not a template. Measure the glider’s bare frame at the seat, back, and arms, write the numbers down, and match them to the seller’s finished cushion dimensions.
A cushion that came off the chair flat, stretched, or squashed to half its loft will hand you the wrong numbers every time. Replacement cushions arrive at a fixed size, so the frame underneath is the only honest reference you have.
What Tools And Numbers Do You Need?
A tape measure, a pencil, and a piece of paper cover the whole job. You are recording eight numbers plus an attachment count before you shop.
Pull the old cushions off first and look at how they were held on. Note whether each piece is removable and whether it uses ties, snaps, hook-and-loop fasteners, elastic, or buttons, because a cushion that fits perfectly by the inch can still be unusable if its ties land in the wrong place.
- Seat width — the inside faces of the arms, measured at both the front and rear of the seat. If the frame tapers, keep the narrower number.
- Seat depth — the front edge of the seat platform back to where the back cushion rests.
- Back width — between the back posts or inside edges.
- Back height — the wooden seat platform up to the top of the back frame, then note whether the replacement stops at the top rail or folds over it.
- Cushion thickness — the old loft as a loose reference only, plus the finished thickness you actually want.
- Arm pad size — length and width of each pad, along with any curved corners or cutouts.
- Attachment geometry — count the ties, measure the spacing between them, and note whether they wrap spindles, rails, or rear posts.
- Mechanism clearance — the gap around any moving hardware, measured with the chair mid-rock.
How Do You Handle Back Cushions That Sit On Top Of The Seat?
Measure the back from the wooden seat to the top of the chair, then check that the cushion maker built seat-cushion thickness into that number. On gliders where the back cushion stacks over the seat, a 5-inch seat pad eats 5 inches of your measured back height.
Thickness is also the number people guess at. Pottery Barn Kids lists a seat cushion for its Comfort Stationary Glider at 21.5 inches wide by 21.5 inches deep by 5 inches thick, with a back cushion at 22.5 inches wide by 22.5 inches high by 5 inches thick. Those are finished measurements for one specific chair, which is exactly why your own frame measurements come first and the seller’s listed dimensions come second.
Arm pads follow their own logic. Curved corners, lumbar sections, headrests, and cutouts do not translate into two numbers, so trace the old pad onto paper and mail the template if the seller accepts one.
Which Cushion Sizes Fit Most Gliders?
Replacement cushions cluster around a handful of ranges, and knowing them tells you fast whether an off-the-shelf set has any chance on your chair.
| Cushion Piece | Common Replacement Range | Watch Out For |
|---|---|---|
| Seat | About 19–22 inches wide × 18–21 inches deep | Tapered frames need the narrower width |
| Standard back | About 19–22 inches wide × 24–27 inches high | Height measured from the wooden seat, not the old pad |
| High back | About 20–22 inches wide × 28–32 inches high | Confirm whether it folds over the top rail |
| Arm pads | About 4–6 inches wide × 16–20 inches long | Curved corners rarely match a rectangular pad |
| Finished thickness | Typically about 4–5 inches | Measure desired loft, not the compressed old foam |
| Tie count | Four to eight ties per cushion | Spacing matters more than the total |
| Weight rating | Chair-specific, not cushion-specific | Pottery Barn Kids lists 300 pounds for its Comfort Stationary Glider |
Those ranges are market examples, not specifications, and the word “universal” on a listing means very little. Gliders differ in seat taper, back height, arm clearance, stacking order, tie placement, and mechanism clearance, and any one of those can sink an otherwise close match. A good starting point is a tested roundup of glider rocker replacement cushions that lists real dimensions per set.
How Do You Know The New Cushions Actually Fit?
An oversized seat pad bows upward or rubs the arms mid-glide, while an undersized one leaves hard frame edges poking through. Test before you settle in.
Center the seat cushion and secure it, position the back cushion, then rock gently and lean back hard. Both pieces should stay put without bunching, scuffing the arms, or creeping forward. Plain-bottom cushions tend to slide during rocking, so ties, straps, hook-and-loop fasteners, or a nonslip backing do real work here. After you rock a few times, the cushions should hold their position with the ties still snug and no gap opening at the back rail.
One more pass worth doing: check that the new fabric and filling clear the glider’s moving hardware through a full rock. Anything that rubs or pinches is a safety problem. For nursery use, follow the chair maker’s own instructions on the model, its weight limit, and any restraint or attachment requirements. Pottery Barn Kids lists a 300-pound limit for its Comfort Stationary Glider, and that number belongs to the chair, not to whatever cushion you put on it. The same cushion set can be perfect on one glider and wrong on the next, which is why the tape measure, not the product photo, makes the call.
Common Questions
Can I measure from the old cushion instead of the frame?
Only as a loose reference. Compressed foam and stretched fabric read smaller or larger than the chair underneath, and a flattened pad can be an inch or more off. Measure the bare frame for width, depth, and height, and treat the old cushion’s loft as a starting point for thickness rather than a final number.
Do I need to know the glider’s brand and model?
It helps, but it is not required. Brand and model point you to the maker’s own replacement options and published dimensions. Without them, your frame measurements do the same job, as long as you compare your numbers against the seller’s finished cushion dimensions before ordering and confirm the return policy covers a misfit.
What if my glider has curved arms or a shaped back?
Shaped pieces need more than two numbers. Trace the old cushion onto paper, mark the curve, and send that template to the seller if they accept custom work. Off-the-shelf rectangular cushions rarely sit correctly on curved arms, and forcing one usually means visible gaps or ties that cannot reach their anchor points.
Should I replace the cushion filling too?
If the old foam has gone flat, replacing it restores the loft you are measuring for. Match the finished thickness you recorded rather than the sagging height of the worn piece, and pick a filling firm enough to hold its shape through daily rocking without packing down within a few months of nursery use.
Sources
- Pottery Barn Kids. “Comfort Upholstered Glider and Ottoman” Lists seat and back cushion dimensions plus the glider’s 300-pound weight limit.
- Pottery Barn Kids. “Comfort Rocker and Ottoman” Reference for glider and rocker frame and cushion specifications.