Relvay makes a pregnancy pillow. We also tell you below when you should not buy one.
The short answer
Only buy a single piece when the maker confirms it fits your exact model and version. Same shape and same size in a listing photo do not prove the strap, clips or cover will connect. Collect the label, order details and photos of the parts you still have, then ask.
- Check: model name and version on the label.
- Keep: straps, clips and covers together.
- Compare: one piece versus a whole new set.
How do you replace one piece of a modular pregnancy pillow?
Identify your exact pillow, list how its pieces connect, and ask the maker or seller to confirm a match before you pay. Work in this order so you do not buy a part twice.
- Find the sewn-in label on a piece you still have. Photograph both sides in daylight. Look for a brand, model name, item number, and any version mark such as V2, 2024, or a batch code.
- Find your order. The confirmation email or the listing page usually shows the item number or, on Amazon, an ASIN. Note the date you bought it.
- Photograph every piece you still have, laid flat from above, plus close-ups of every strap end, buckle, snap, hook-and-loop strip or zipper where pieces join.
- Measure the missing piece from its twin, if you have one. Length, width and thickness, lying flat.
- Ask the maker first, then the seller. Use the questions further down. Wait for a written yes before ordering.
- Price the whole set too. If the single piece costs most of a new set, or is not sold at all, a new set may be the cleaner fix.
Why does a lookalike piece so often not fit?
Because the part that matters is the connection, not the shape. Makers change strap lengths, buckle types and fabric between versions, and the listing photo often stays the same.
Moving day, week 31
We moved apartments on a Saturday and somewhere between the old place and the new one, the strap that joined my two wedges disappeared. Two wedges in a laundry bag, no strap. I was 31 weeks.
That night I lay there with the wedges sliding apart every time I shifted, and I thought, fine, I will just buy the strap. I found a listing with the same grey wedges in the photo. Same shape, same color. I had my thumb on the buy button when I noticed the buckle in the photo was a plastic clip. Mine had been hook-and-loop.
I had no idea which one was the old version and which one was new. Neither did the listing.
"The fact that you can strap the belly support pillow to the back support pillow is essential to why this works so well."Amazon review of another brand's wedge set
If the connecting part is the missing part, the photo tells you almost nothing.
Your parts sheet: what to record for each piece
Fill one row per piece, including the missing one. This is what you send the maker, and it is what stops you buying the wrong version.
| Piece | What to record | Why it matters |
|---|---|---|
| Each cushion or wedge | Label text, item number, version or batch mark, flat measurements | Fill and size can change between versions with the same name. |
| Strap or connector | Length, width, how each end attaches (clip, loop, snap, hook-and-loop, zipper) | A different end type will not join your old pieces. |
| Small cushions or inserts | Shape, whether they slide onto the strap or attach another way | Some sit on a strap, some fasten to a cushion. |
| Covers | Whether each piece has its own cover, zipper position, care label | A new piece may come with a different fabric or cover cut. |
| Order record | Seller, date, item number, color name | Color names and versions often change by season. |
Keep all remaining parts together in one bag while you wait, including any spare covers. Losing a second piece turns a small order into a new set.
What should you ask the maker before buying a single piece?
Ask whether the part is sold for your exact model and version, and get it in writing. Send your photos and parts sheet with the questions so the answer is about your pillow, not a general one.
- Is this part sold on its own for my model and version? Here are my label photos and order number.
- Has the strap, buckle or clip changed since I bought mine?
- Will the new piece match my old pieces in size and fill, or only roughly?
- Does the replacement come with its own cover, and is the fabric the same?
- Can I return the part if it does not connect to my set?
Some brands list model-specific parts. Najell, for example, sells a replacement inner cover made for its own pregnancy pillow's inner pillows, and does not list it for other models. That is the pattern to look for: a part named for your model, not a part that looks right.
What should you not do while you wait?
Do not open a cushion to move filling around, and do not improvise a hard connector. Both can leave you with a piece that no longer matches its care label or feels lumpy under you.
- Do not unpick seams to borrow filling from one piece for another.
- Do not join pieces with safety pins, string or hair ties. They dig in, and they can tear fabric.
- Do not wash the remaining pieces a new way to match a guess about the new one. Follow each piece's own label.
In the meantime, regular pillows can stand in for the missing piece. The NHS suggests side sleeping with pillows supporting your bump and one between your knees, and that works with whatever you have. If you have also lost the instructions, our guide on finding pregnancy pillow instructions covers how to get them.
One piece or a whole new set?
Buy the piece when the maker confirms the match and the price is fair. Replace the set when the part is not sold, the version changed, or the remaining pieces are worn.
| Situation | Usually makes sense |
|---|---|
| Maker sells the part for your version, in writing | Buy the single piece. |
| Part sold, but the connector type changed | Ask if a connector is included. If not, compare with a new set. |
| Part not sold at all | Use regular pillows for now, or replace the set. |
| Remaining pieces flat, torn or stained | A new set, so every piece matches. |
| Due in a few weeks | Regular pillows may get you there. Decide on comfort, not completeness. |
Frequently asked questions
Can I buy just one piece of a modular pregnancy pillow?
Sometimes, if the maker sells parts for your exact model and version. Many sell only complete sets. Ask with your label photos and order number before buying a lookalike.
Will a piece from a different brand connect to my set?
Usually you cannot count on it. Strap lengths, buckles and fasteners differ between brands and even between versions of one brand. Treat a cross-brand piece as a separate pillow, not a part.
Where do I find the version of my pregnancy pillow?
Check the sewn-in label on each piece, your order email, and the listing's item number or ASIN. If none shows a version, send the maker photos of the connectors and ask.
I lost the strap. Can I use the wedges without it?
You can use them as two separate cushions, like regular pillows, but they will drift apart. Do not tie them with string or pins while you wait for a confirmed replacement.
Should I open a piece to add filling from another one?
No. Opening seams can spill filling, change how the piece feels, and leave it outside its care instructions. Ask the maker or replace the piece instead.
If you end up replacing the whole set
Relvay sells the 3-Piece as a complete set, not as single replacement pieces, so we cannot fill in a missing part from another brand's pillow. If your maker has no part for your version and you are replacing the set anyway, this is what we make. Its cover is listed as removable and washable.
Two wedges for bump and back, joined by a flat strap, about as wide as your torso. Keep a regular pillow between your knees. $79.99, 90-day returns.
Yasmin's story is a composite based on real reviews and public posts from pregnant side sleepers. Names and details are changed.
