18" Square Outdoor Pillows

Square 18", Sunbrella Play Adobe

This square throw pillow brings a clean, modern look to your seating area or patio. It's made from Sunbrella® fabric that's designed to withstand sun and rain, making it a versatile choice for both indoor and outdoor spaces. The material adds a layer of comfort while remaining easy to clean for everyday use. A tailored silhouette keeps the shape structured, while a hidden zipper closure allows for easy removal. Plus, we love how the reversible design lets you refresh your favorite furniture pieces with ease.

I bought these (two different sizes) green pillows to brighten things up. They are perfect. They look good with other pillows I bought another time from Wayfair. They can be unzipped and washed. Fabric is great quality/durable.. Kelly. Indian Hills, CO. Sat Aug 08 2026

18" x 18", Natural/Blue

Add a hint of beachiness to your porch swing or living room sofa with this set of 2 square throw pillows. These matching pillows are made in the USA and feature a solid-hued cover complemented by piped edges in a different color. They have weather- and stain-resistant Sunbrella covers that are sewn closed around recycled polyester filling. Plus, these pillows are reversible, so they look great no matter which way you turn them. We love how this set looks on a patio bench or poolside conversation set.

Really good quality product, perfect for my space.. Tracy. Centennial, CO. Thu May 15 2025

18" x 18"

Elevate your indoor or outdoor space with this versatile cotton throw pillow cover. Designed to withstand the elements, it features a weather and stain-resistant construction, making it ideal for both indoor and outdoor use. The square shape and floral pattern add a touch of elegance to your decor, while the knife-edge finish offers a clean, polished look. With a convenient zipper closure, maintaining this pillow cover is a breeze – just take it to the dry cleaner when needed. Enjoy a fresh and vibrant atmosphere, minus the worry!

This pillow cover is a great quality and I love the colors. It will be a nice fall accent.. Kylee. Des Moines, Iowa. Sat Sep 12 2026

18" x 18", Frolic Citrus

This outdoor throw pillow has a forest-inspired pattern (creatures and all!) that breaks up the look of any patio sofa or chair. It's made from 100% polyester and is stuffed with a polyfill insert for extra comfort. The included pillow insert can be easily removed with the zipper closure, making spot cleaning much easier. It even comes in the size and color of your choice!

Loverthem!. Amy. Charlottesville, VA. Thu Apr 02 2026

18" x 18"

Give your living space a fresh update with this cotton square pillow cover. Designed to elevate any room's ambiance, it features a versatile and inviting look. The zipper closure ensures easy removal for cleaning or swapping out inserts. This pillow cover is crafted from high-quality cotton material, making it a delightful addition to your home decor. So, cozy up and enjoy the simple yet elegant touch this cover brings to your favorite relaxation spot.

Nice addition of a pattern to colorful pullows. Nicole. Mahwah, NJ. Sat Feb 22 2025

Canvas Natural, 18" x 18"

Designed with meticulous attention to detail, this sunbrella pillow adds a touch of sophistication to any outdoor setting. The square shape and piped edges provide a clean and polished look, elevating the aesthetics of your patio, deck, or garden area. But it's not just about looks - this pillow is built to withstand the elements. Constructed with Sunbrella's renowned fabric, it boasts exceptional resistance to fading, mold, and mildew. The fabric's UV-resistant properties ensure that your pillow remains vibrant and fresh, even under the sunniest skies.

Love these pillows. I got the sunflower yellow ones and I love them. Sunbrella products really hold up and add a bright pot to my back patio.. Tracey. Northfield, IL. Sun Sep 17 2023

18"H x 18"W, Canvas Taupe

Lively and bright, this shade provides a sunny pop of color to your home.

Perfect for my front porch wicker rockers! Nice size and great material. Color was perfect.. Beverly. Fletcher, NC. Mon May 11 2026

18" x 18", Cream

Create a relaxing oasis in your very own backyard with the help of this trend-forward set of square pillows featuring a solid Sunbrella fabric. This pillow is sure to freshen up your outdoor space while offering added comfort to help you and your guests feel at home.. It features durable, weather-resistant material and is made in North America, offering unparalleled quality that you can trust!

Exactly the color I was looking for. Fantastic quality and am looking forward to seeing how they hold up in the weather for years to come.. Sharond. Lexington, KY. Sat Sep 28 2024

18" x 18"

Upgrade your living space with this cotton square pillow cover that's both versatile and inviting. Designed with a zipper closure for fuss-free maintenance, it's a delightful addition to your sofa, bed, or favorite reading nook. The soft cotton material ensures a cozy feel while remaining easy to care for. Simply unzip the cover, remove the insert, and send it off to the dry-clean for a fresh look.

Beautiful and high quality material. Exactly what I had expected.. Lisa. Mesa, AZ. Mon Dec 16 2024

Brown/Gray, 18'' x 18''

Create a relaxing oasis in your very own backyard with the help of this trend-forward set of square pillows featuring a solid Sunbrella fabric. This pillow is sure to freshen up your outdoor space while offering added comfort to help you and your guests feel at home. It features durable, weather-resistant material and is made in North America, offering unparalleled quality that you can trust!

Very comfortable, fluffy and great quality. Gave new life to my old wicker furniture.. Toni Anne. Ft Myers Fl. Mon Feb 16 2026

Accesorize your home with this Twister Indigo Pillow

The size and design are great and adorable; however, the pillow inserts are so deflated and unpuffable. I ordered two of these pillows and they both came shrink wrapped. I unwrapped them both, put both pillows through fluff cycles in my dryer with dryer balls together and separately and they still did not fluff up like a traditional pillow. I would only recommend them if there is a desire to have a thin pillow.. Sandra. Raleigh, NC. Fri Sep 12 2025

18" x 18", Down

Introducing the accent pillow! This stunning piece brings a unique modern style to any living space. Crafted with 100% Polyester, this pillow is soft to the touch and is sure to be a conversation starter.The care instructions are simple: spot clean with mild detergent and lay flat to dry - so you can enjoy your new piece of decor for years to come!

Very nice pillow - very full - however it was shipped in a bag that was ripped multiple times before delivery leaving black marks on a white pillow. Such a bummer!. Anonymous. Lewis Center, OH. Fri Apr 24 2026

Indigo, 18" x 18"

Elevate your outdoor living space with this Sunbrella® throw pillow, designed to withstand the elements while adding a pop of color to your patio or deck. Made from weather-resistant Sunbrella® fabric, this square pillow is filled with 100% recycled polyester, making it a responsible and eco-friendly choice. The solid color pattern is versatile, and the sewn-closed design ensures the insert stays put. Plus, it's stain-resistant, so you can enjoy worry-free lounging. For easy care, simply spot clean when needed. Happy relaxing!

Nice pillows. Definitely outdoor pillows but really not scratchy fabric like some. I’ve had sunbrella before and it really holds up to anything. Would work for a kids area where pillows might take a beating. Covers are not removable but that’s fine for these bc they will wipe clean. Only complaint is minor-they really don’t have a Boucle look in the dark blue. Other colors may have more variation but these are a true solid navy.. Taral. Eureka, IL. Fri Nov 10 2023

18" x 18", Ivory

Welcome decorative detail to enhance any seating area with this set of two outdoor square pillows. The contrasting colored flange accent decorates these pillows with elegant character, allowing them to complement the look and feel of surrounding furniture and features. Filled with 100 percent recycled fiber and sewn closed, these pillows are durable and supportive through long-term use to ensure maximum comfort and enjoyment. The exteriors are UV and fade resistant to protect against wear and aging when left outdoors.

Color a little off from picture but really like them.. Christina. US. Wed Aug 11 2021

18" H x 18" W x 6" D, Sunbrella Spectrum Cilantro

Add a cozy touch to your poolside seating group or patio Adirondack chair with this essential throw pillow, featuring a simple Sunbrella that keeps it as good as new, rain, or shine.

Beautiful, well made pillows added the touch of class I was looking for! Love the Sunbrella fabric.. Leslie. Cottonwood Az. Sun Nov 19 2023

18" H x 18" W, Blue

Create a relaxing oasis in your very own backyard with the help of this trend-forward set of square pillows featuring a solid Sunbrella fabric. This pillow is sure to freshen up your outdoor space while offering added comfort to help you and your guests feel at home.. It features durable, weather-resistant material and is made in North America, offering unparalleled quality that you can trust!

Bought these for my front porch, rocking chairs… they go great with our brick porch, the exact look I was going for. Pillows seem very weatherproof too. Definitely will hold up this summer, i’m sure.. Kelly. Valencia, CA. Sat May 09 2026

18" x 18"

Add a pop of color and personality to your outdoor space with this versatile and weather-resistant throw pillow. Crafted from 100% polyester, it features a reversible navy and white toile pattern that complements various styles. The pillow cover includes a zipper closure, making it easy to remove and spot clean when needed. Filled with polyester for a cozy feel, this square accent pillow is a delightful addition to your patio, deck, or poolside furniture. So, go ahead and let your outdoor space shine with a touch of timeless charm.

High quality as usual from Birchlane and exactly as detailed in description online.. Lisa. Mesa, AZ. Mon Dec 16 2024

Black/White, 18" x 18"

Create a relaxing oasis in your very own backyard with the help of this trend-forward set of square pillows featuring a solid Sunbrella fabric. This pillow is sure to freshen up your outdoor space while offering added comfort to help you and your guests feel at home. It features durable, weather-resistant material and is made in North America, offering unparalleled quality that you can trust!

The pillows inserts are solid and I suspect will hold up well as has been my experience with sunbrella in the past. The colors are a bit muted including the dark blue appearing as denim. I think they will be a nice compliment to my other lumbar pillows.. Kimberly. Charlestown, MA. Tue May 02 2023

Green, 18" x 18"

Create a relaxing oasis in your very own backyard with the help of this stylish set of square throw pillows featuring a subtle, leaf print fabric. This throw pillow is sure to freshen up your outdoor space while offering added comfort to help you and your guests feel at home. This Sunbrella fabric features a durable, weather-resistant Sunbrella material and is made in North America, offering unparalleled quality that you can trust!

Beautiful, well made. Look great on our tealisg outdoor sofa.. Candi. Charleston, SC. Sat May 23 2026

18" x 18", Black Stripe/Light Green

This 2-piece throw pillow set features a structured, square silhouette with piped edges for a tailored look in your outdoor seating area. The covers are crafted from Sunbrella® fabric, which provides a soft texture while standing up to the elements. A striped pattern adds a classic, nautical vibe that blends easily with your existing patio furniture. These pillows are designed to be stain-resistant, making them a practical choice for busy homes.

I bought these pillows for my chaise lounges. I will open up my deck for summertime use as soon as the weather lets me! Can’t come soon enough!. Anonymous. US. Sun Mar 26 2023

18" x 18", Navy

Upgrade your outdoor living space with this set of two indoor/outdoor throw pillows, designed to bring both comfort and style. Made with Sunbrella® fabric, these square pillows are weather-resistant and stain-resistant, making them perfect for patio lounging or poolside gatherings. The solid color design with piped edges and a contrasting border adds a touch of sophistication to your decor. Filled with 100% recycled polyester, they're eco-friendly and reversible for versatile use. Just spot clean when needed to keep them looking fresh.

Very nice quality and beautiful navy color. Just what we needed!. Jerrie. Edmond, OK. Sun Aug 15 2021

18" H x 18" W x 6" D

Create a stylish outdoor living space with this pillow set. Made from durable Sunbrella outdoor fabric, this chic and exceptionally comfortable pillow set is resistant to fading, staining and water, ensuring that this pillow set will be a welcome staple in your patio, living room or bedroom for years to come. The pillows are made from 100% recycled polyester fibers.

Perfect and buying more!. Daniel. Crestwood, MO. Mon Jun 01 2026

18" x 18", Brown

Add a touch of floral flair to your indoor or outdoor living space with this lovely throw pillow. Made from Sunbrella® fabric, it's weather-resistant and easy to spot clean, ensuring it stays fresh and vibrant season after season. The 100% recycled polyester fill provides a cozy feel, while the square shape and piped edges offer a classic look. Whether you're lounging on the patio or snuggling up on the sofa, this accent pillow is a delightful addition to your home. Just remember, the cover is sewn closed, so it's not removable. Enjoy!

The green is perfect but the background is definitely a pale muted blue.. Michele. Van Wert. Sun Jul 13 2025

18" x 18", Blue

Add a touch of coastal flair to your indoor or outdoor living space with this striped Sunbrella® throw pillow. Crafted with weather-resistant fabric, it's designed to withstand the elements while maintaining its fresh appearance. The square pillow is filled with 100% recycled polyester, offering a cozy spot to relax. Featuring piped edges for a polished look, this accent piece effortlessly complements your existing decor. To keep it looking its best, simply spot clean as needed. Enjoy the laid-back vibe it brings to your home or patio!

Looks good and well made. Anonymous. Sun Jul 13 2025

Blue, 18" x 18"

Elevate your outdoor space with this weather-resistant throw pillow, designed to add a touch of cozy comfort to your patio or porch. Crafted from acrylic fabric, this square pillow is filled with 100% recycled polyester for a soft and supportive feel. Its knife-edge design gives it a clean and modern look, while the spot-clean care ensures it stays looking fresh season after season. So, go ahead and snuggle up with your favorite book or enjoy a lively conversation – this pillow has got your back!

Great quality accent pillow. Christian. Gurley, AL. Sat Sep 20 2025

18" x 18", Dupione Sand

This 2-piece indoor/outdoor throw pillow set has a neutral green, tan, and ivory palette that make it a key ingredient to any space in your home, from the living room to the back patio. Each reversible square pillow is wrapped in weather-resistant Sunbrella fabric and filled with a sewn-in 100% recycled fiber insert, so they're sure to stand up to little ones and UV rays beaming down when left outdoors. And when this accent pillow set needs some freshening up, simply spot clean it with a damp cloth.

Great color and firm but, not too firm back “accent”, pillow. Anonymous. Mon Sep 15 2025

Yellow, 18"H x 18"W

Outdoor trillium pillow

Gorgeous pillows for my pool loungers. Excellent quality and the pink / coral color combo is gorgeous.. Labelle. Bellport, NY. Sun Apr 13 2025

18" H x 18" W, Black

This outdoor throw pillow brings bold vertical striping to your seating arrangement, whether you're relaxing on the patio or inside your home. Crafted with a weather-resistant polyester cover, it's designed to stand up to everyday use while adding textured character across your sofa or bench. The clean silhouette keeps the design tailored and structured, making it simple to style on its own or layer with other accents. Plus, it features a zipper closure that lets you easily remove the cover whenever it needs a quick spot cleaning.

I expected them to feel heavier. The fabric is nice, but the pillow insert is flimsy.. Patrice. Arabi, LA. Mon Jun 07 2021