Best Square Throw Pillow Inserts of 2026
* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.
Square throw pillow inserts are a must-have accessory for anyone looking to enhance the comfort and style of their living space. These inserts are designed to fit snugly into decorative pillow covers, providing a plush and supportive base for your head and back. Made from high-quality materials like cotton, polyester, and down feathers, these inserts come in a range of sizes to suit any pillow cover. Whether you're looking to add a pop of color to your sofa or create a cozy reading nook in your bedroom, square throw pillow inserts are the perfect solution.
At a Glance: Our Top Picks
Top 10 Square Throw Pillow Inserts
Phantoscope 18x18 Pillow Insert
The Phantoscope 18x18 Pillow Insert is a premium quality insert made of 100% pure cotton cover, filled with hypoallergenic micro polyester, and has poplin piping technology for better durability. The pillow insert is soft, resilient, and easy to clean. It comes in an independent, delicately designed packaging, making it a perfect gift for any occasion.
Amazon Basics Hypoallergenic Square Pillow Inserts 18" 4-Pack
The Amazon Basics Pillow Inserts come in a convenient 4-pack of 18x18-inch cushions, perfect for refreshing your sofa, bed, or chair with new stuffing. These inserts fit easily inside your existing pillow covers or shams, making them ideal for decorative use. They arrive compressed to save space, but you can quickly restore their fluffiness by tossing them in the dryer on the Air/Fluff cycle for 5 to 10 minutes or fluffing by hand until they reach your preferred thickness. Plus, these pillow inserts are machine washable, so you can keep them fresh and clean with minimal effort.
Phantoscope 18x18 Pillow Inserts, Set of 4
Get the Phantoscope 18x18 Pillow Inserts, Set of 4 made in the USA with American-made virgin micro-fiber filling and high-quality polyester covers. These hypoallergenic and odorless throw pillow inserts have a high filling capacity, making them soft and resilient with extra resilience and comfort. These universal decorative pillows are great as an accent piece or to support your back. They come vacuum shipped and are washable.
Pillowflex Synthetic Down Pillow Insert
The Pillowflex Synthetic Down Pillow Insert is perfect for those who want an allergy-free, cruelty-free, and odorless pillow. The pillow insert is ultra-soft and versatile, making it perfect for use in your home, including on your couch, sofa, love seat, bed, and reading nook. The product is made in the USA with sustainably sourced fiber and a polyester-cotton blend shell. It comes in a recommended size of 22"x22" inches, perfect for use in a 20"x20" inch sham.
Oubonun Pillow Inserts with 100% Cotton Cover
The Oubonun 18 x 18 Pillow Inserts come in a set of 2 and are made with a 100% cotton cover that is breathable and skin-friendly. The pillows are well-made with sufficient 3D high-quality fillings that are durable, soft yet firm enough for back support, providing the best experience for you. These versatile pillows are great for adding accents to your room's décor and can be used in chairs, beds, couches, sofas, offices, cars, etc. They are comfortable, soft, and fluffy, providing suitable softness and firmness. Additionally, the pillows are easy to care for and can be machine washed and tumble dried on low heat.
JIEITIVE Throw Pillow Inserts 18 x 18 Inches
JIEITIVE Pillow Inserts are crafted from 100% polyester material, ensuring a soft and durable pillow. The size variations make them versatile for different pillow covers. These inserts provide elegance to your space, offering comfort and lumbar support on your sofa or bed. Easy to care for, they can be hand washed or lightly washed with a mild detergent. Additionally, they are vacuum-sealed for shipping, but can be fluffed up easily. Enhance your decor effortlessly with JIEITIVE Pillow Inserts.
JIEITIVE Hypoallergenic Pillow Insert 20x20
The JIEITIVE Pillow Insert offers a soft and durable cushion made from 100% polyester, ensuring your pillow looks full and stays comfortable for a long time. Its filling is crafted from 7D PP material, which feels gentle and supportive, making it perfect for adding comfort to your sofa or bed. Available in various sizes, you can choose a slightly larger insert than your pillow cover if you prefer a plumper look. Plus, these inserts are easy to care for—you can hand wash or lightly wash them with mild detergent and tumble dry, providing you with a hassle-free way to keep your pillows fresh and clean.
Leeden 18 x 18 Pillow Inserts (Set of 2)
The Leeden 18 x 18 Pillow Inserts come in a set of 2 and are perfect for use as sofa, chair, or bed pillows. The 100% cotton cover and 3D high-quality fillings are breathable and skin-friendly, providing ample support when you lie down or lean on them. They are easy to clean, with the option to hand wash or machine wash on gentle cycle and tumble dry on low heat. The hidden zipper makes it easy to remove or add fillings, and they will fluff up within a couple of hours after being shipped vacuum packaged.
18x18 Decorative Throw Pillow Inserts-Set of 2
Basic Home 18x18 Decorative Throw Pillow Inserts come in a set of 2 and are perfect for use as an insert in decorative shams, couch shams, sofa pillows, and bedroom shams. The 26oz feather and down fill is encased in a durable 100% 233TC cotton fabric with a downproof stitch to prevent feathers from poking out. The insert is vacuum packed for easy shipping and is maintenance-free, only requiring a 20-minute spin in the dryer every other month to keep it fluffy and fresh. For best results, it is recommended to order 2 sizes up from your pillow cover size to provide a plump and full pillow from corner to corner.
Oubonun 18x18 Polyester Throw Pillow Inserts, Pack of 2
The Oubonun Pillow Inserts come in a convenient pack of two, each measuring 18x18 inches and made from soft polyester. When you first open them, they might look a bit flat, but a quick tumble in the dryer on low heat will help them fluff up nicely, giving your pillows a fuller, more inviting look. Gently patting them after unpacking also helps the fibers relax and regain their natural shape over time. These inserts feature clean, defined edges that provide a polished shape, making your pillow covers look crisp and stylish. Filled with premium polyester fiber, they offer a cozy, soft feel that’s comfortable without being too firm, perfect for everyday use.
Frequently Asked Questions (FAQs)
1. What are those square pillows called?
We're here to help! A euro sham pillow (often known as a euro pillow) is a square pillow used decoratively on beds, usually placed behind standard, queen, and king sized pillows. The traditional size for euro sham pillows is 26" x 26".
2. What size is a standard square throw pillow?
The most popular throw pillow shape is square (aka Euro). Square throw pillows are incredibly versatile, with easy stacking and mix-and-match ability. You'll often find square throw pillows in these dimensions: 16” x 16”
3. Should the pillow insert be bigger than the cover?
What size insert should I get for my pillow covers? For a full and plump look, choose an insert 2" larger than the size of the pillow cover. For example: if you purchase a pillow cover that's 20x20, purchase a pillow insert measuring 22x22.
4. What do you fill a throw pillow with?
Pillow stuffing can be made using scraps of fabric, yarn, or old clothing. For best results, cut the fabric into small pieces. A pillow made with recycled stuffing will be less fluffy than one stuffed with other materials.
During our square throw pillow insert research, we found 24 square throw pillow insert products and shortlisted 10 quality products. We collected and analyzed 378,687 customer reviews through our big data system to write the square throw pillow inserts list. We found that most customers choose square throw pillow inserts with an average price of $19.90.
The square throw pillow inserts are available for purchase. We have researched hundreds of brands and picked the top brands of square throw pillow inserts, including Phantoscope, Pillowflex, Oubonun, JIEITIVE, Leeden. The seller of top 1 product has received honest feedback from 448 consumers with an average rating of 4.9.
Denise Buck is an excellent content writer. She has the ability to look for great deals on Home & Kitchen appliances and office products on the Internet for various customers, then she can write a complete buying guide to help you find products that fit your budget and the best bargains.