Finding the best square sham stuffer pillow in an 18-inch size depends on how full you want your cover to look. Some inserts are sold as 18 x 18 inches but may be intended for smaller covers, while fill weight and pack size also affect the result. The options below include two EDOW inserts, an Ashler insert, a Mybecca insert, and a four-pack listing whose description gives a different size than its title. Check the measurements carefully before ordering.
Quick Comparison
| Product | Listed Size | Pack Size | Notable Detail |
|---|---|---|---|
| EDOW 18 x 18 Pillow Inserts, Set of 2 | 18 x 18 inches | 2 inserts | 0.99 lb per insert; polyester fiber fill |
| EDOW Lightweight 18 x 18 Pillow Insert | 18 x 18 inches | 1 insert | 0.66 lb; soft, lightweight fill |
| Ashler 18 x 18 Hypoallergenic Pillow Insert | 18 x 18 inches | 1 insert | 7D high-density fiber; machine washable |
| Mybecca 18 x 18 Sham Stuffer | 18 x 18 inches in title | 1 insert | Listing says best for smaller covers |
| GOLD TEXTILES Throw Pillow Inserts, Pack of 4 | Conflicting size details | 4 inserts | Title says 18 x 18; description says 16 x 16 |
Our Picks: Best Square Sham Stuffer Pillow 18 X reviews
1. EDOW 18 x 18 Inserts: A Practical Two-Pillow Set
This EDOW set includes two 18 x 18-inch inserts filled with polyester fiber. Each weighs 0.99 pound, making this the heavier of the two EDOW options in this list. The brand describes the fill as having medium support and good spring-back ability.
The inserts arrive compressed and vacuum sealed, so allow them time to expand and fluff them before placing them in covers. The listing says they can be machine washed on a gentle cycle and dried in a dryer or in sunlight. That makes the care instructions more straightforward than those provided for some alternatives.
This set suits shoppers who need two matching inserts and want more fill weight than the lighter single EDOW option. Keep in mind that a 0.99-pound insert is still a polyester alternative to down, not a down-filled pillow. Its medium-support description also means it may not feel as firm as a dense support cushion.
Pros:
- Two inserts are included.
- Each insert is listed at 18 x 18 inches.
- Heavier fill than the other EDOW option here.
- Gentle machine-wash care is listed.
Cons:
- Arrives compressed and needs time to regain its shape.
- Medium support may not suit shoppers who want a very firm insert.
Verdict: Choose this set if you need two standard-size inserts with a fuller, heavier feel than a lightweight option.
2. EDOW Lightweight Insert: A Softer, Less-Full Option
This single 18 x 18-inch insert uses microfiber polyester fill and weighs 0.66 pound. EDOW specifically describes it as lightweight and soft, with medium support. The lower fill weight is an important distinction: the listing advises choosing another version if you want a thicker, more solid pillow.
Like the two-pack option, it arrives vacuum sealed and can be machine washed on a gentle cycle. Fluffing it after unpacking and following the listed drying guidance can help it recover its shape. Because it is sold individually, it also works if you need to replace only one insert.
This is a sensible choice for a relaxed, softer look or a cover that should not feel tightly packed. Compared with the 0.99-pound EDOW insert, it is the less substantial option, so shoppers seeking a plump, structured sham may prefer the heavier model.
Pros:
- Listed as an 18 x 18-inch insert.
- Lightweight, soft microfiber polyester fill.
- Sold as a single insert for one cover.
- Gentle machine-wash care is listed.
Cons:
- Its 0.66-pound weight may look less full in some covers.
- The listing recommends another version for a thicker, firmer feel.
Verdict: Pick this insert if softness and a lighter feel matter more to you than a very plump appearance.
3. Ashler 18 x 18 Insert: A Washable, Higher-Density Choice
Ashler’s single 18 x 18-inch insert is filled with 7D high-density fiber. The listing describes it as supportive and says it rebounds in three seconds, though the actual result can depend on how long it has been compressed and how it is handled after unpacking. Its cover is described as breathable, and the fabric is listed as OEKO-TEX certified and skin-friendly.
The insert is machine washable, which is useful for a pillow that may see regular use on a sofa, chair, or bed. It arrives vacuum compressed; the brand recommends patting it to fluff it and gives tumble-drying or light-steaming instructions for restoring fullness. The listing also suggests sizing up by two inches for a plumper look, so consider that guidance when matching it with your cover.
This option stands out for its stated high-density fill, washable design, and listed fabric certification. It costs more in quantity than a set if you need several pillows, since this listing is for one insert. As with any insert, check the cover’s actual dimensions and desired fullness before choosing a size.
Pros:
- 7D high-density fiber is intended to provide steady support.
- Machine washable, according to the listing.
- Skin-friendly OEKO-TEX certification is stated by the brand.
- Care guidance includes ways to restore fullness after shipping.
Cons:
- Only one insert is included.
- It arrives compressed and may need extra fluffing to reach its intended shape.
Verdict: Consider the Ashler if you want a washable single insert with a denser fill and clearly stated care guidance.
4. Mybecca Sham Stuffer: Check the Cover Fit Before Buying
The Mybecca title calls this an 18 x 18-inch insert, and its description identifies hypoallergenic polyester microfiber fill with medium support. However, the listing also says it is best for 14 x 14, 15 x 15, and 16 x 16-inch covers. It explains that the insert can decrease in size by about 10% to 15% after filling, and recommends ordering two inches up.
That size guidance makes this a less direct match for someone who wants an insert to fill an 18 x 18-inch cover. It may be useful for smaller sham covers or for shoppers who prefer a less tightly packed appearance, but verify the size details on the product page before ordering. The insert is compressed for shipping and needs fluffing after unpacking.
The polyester fill is described as resilient and durable, and the listing identifies it as made in the U.S. It does not provide the same clear wash instructions as the EDOW and Ashler options, so consider that if easy cleaning is a priority.
Pros:
- Polyester microfiber fill is described as hypoallergenic.
- Medium support and resilient fill are stated in the listing.
- May work well with smaller covers, based on the fit guidance.
Cons:
- The title size and recommended cover sizes may cause confusion.
- Clear machine-wash instructions are not provided in the supplied description.
Verdict: Choose Mybecca only after confirming the intended fit; its own size guidance points to smaller covers rather than a straightforward 18-inch match.
5. GOLD TEXTILES Four-Pack: Confirm the Size in the Listing
This GOLD TEXTILES listing offers four white polyester inserts, which could be convenient when furnishing several covers at once. The supplied title says 18 x 18 inches, but the product description repeatedly states that each insert is 16 x 16 inches. Since the two size details conflict, do not assume these will fit 18 x 18 covers without checking the current product page carefully.
The description says the inserts are vacuum sealed and need time to fluff up after opening. It recommends a gentle machine wash with warm water and tumble drying on low, while also advising shoppers not to use bleach. These care details may be useful for household pillows, but the size discrepancy is the main issue for anyone shopping specifically for an 18-inch sham stuffer.
If the listing confirms that the pack is 16 x 16 inches, it may suit smaller covers or a coordinated set of four. For a true 18-inch insert, the EDOW and Ashler listings provide clearer size information in the supplied details.
Pros:
- Four inserts are included.
- Polyester fill is described as supportive and resilient.
- Care instructions are provided in the description.
Cons:
- The title says 18 x 18 inches while the description says 16 x 16 inches.
- The size conflict makes it difficult to recommend for an 18-inch cover without verification.
Verdict: This four-pack may work for multiple smaller covers, but confirm the actual dimensions before buying it for an 18 x 18-inch sham.
How to Choose an 18 x 18 Square Sham Stuffer
Match the insert to your cover
Start with the cover’s actual dimensions, not just the size named in a product title. Listings can include fit guidance that differs from the headline measurement, as seen with the Mybecca and GOLD TEXTILES options. If you want a neatly filled sham, check the product details and confirm that the insert is intended for your cover size.
Decide how full you want the pillow to look
A fuller look usually calls for more fill inside the cover, while a lighter insert can create a softer, less structured appearance. The two EDOW options illustrate this difference: one is listed at 0.99 pound per insert, and the other at 0.66 pound. Ashler recommends sizing up by two inches for a plumper look, but always consider the dimensions and shape of your particular cover.
Compare fill and support
These options use polyester or microfiber polyester rather than down. The listings describe different levels of support, from EDOW’s medium support to Ashler’s higher-density fiber. Think about how you plan to use the pillow: a decorative sham may need a different feel from a cushion you lean against regularly.
Check the pack quantity
Pack size can change which option makes sense for your home. EDOW’s heavier insert comes as a set of two, the lighter EDOW and Ashler options are sold individually, and GOLD TEXTILES lists a pack of four. Count the covers you need to fill before comparing the options, and confirm that every insert in a multi-pack is the size you expect.
Review care instructions
Care guidance varies. The EDOW inserts are listed as machine washable on a gentle cycle, while Ashler also identifies its insert as machine washable. Mybecca’s supplied description does not give a clear washing method. If you expect to clean the insert often, favor a product with care instructions that match your laundry routine.
Allow time for compressed inserts to recover
Several of these pillows ship vacuum compressed. After opening, follow the product’s fluffing and drying directions and give the insert time to expand before deciding whether it fills the cover well. Do not judge its final shape while it is still compressed from shipping.
Frequently Asked Questions
What size insert should I use for an 18 x 18-inch sham?
Check the cover’s measurements and the insert’s fit guidance. An insert listed as 18 x 18 inches may not suit every cover equally, and some brands recommend a larger insert for a fuller appearance. Confirm the specific product details before ordering.
Is a polyester insert the same as a down pillow?
No. The products in this guide use polyester or microfiber polyester fill and are described as down alternatives. They do not contain down based on the supplied product details.
Which option comes with two inserts?
The EDOW 18 x 18 set at the top of the list includes two inserts. The other EDOW option and the Ashler option are listed as single inserts, while GOLD TEXTILES lists four.
Which insert is the lightest?
The single EDOW insert is listed at 0.66 pound. The other EDOW model is listed at 0.99 pound per insert. The supplied details do not state a weight for the Ashler, Mybecca, or GOLD TEXTILES options.
Can these inserts be machine washed?
The EDOW listings specify a gentle machine-wash cycle, and Ashler describes its insert as machine washable. GOLD TEXTILES provides washing guidance in its description. The supplied Mybecca details do not specify a clear washing method, so check its product instructions before cleaning.
Why does an insert look flat right after unpacking?
Several options arrive vacuum sealed or compressed for shipping. The product details recommend fluffing the insert and allowing it time to recover. Follow the care and restoration instructions for the specific model you choose.
Final Recommendation
For a clearly specified 18 x 18 insert with a fuller feel and two pillows in the set, the heavier EDOW option is the most straightforward pick in this group. Choose the lighter EDOW insert if you want a softer, less substantial pillow, or consider Ashler for its stated higher-density fill and machine-washable design. Treat the Mybecca and GOLD TEXTILES sizes with extra care: their supplied details point to smaller cover sizes or contain conflicting measurements.