Pillow Covers Guide: Decorative vs Pillowcases, Sizes, Closures, Fabrics and Care

Pillow covers are the easiest way to change the look of a room. Swap the covers on your sofa pillows, and a living room feels new. Choose a cover with a zipper or a good envelope back, and washing becomes simple. Pick the wrong size, and the pillow looks flat and baggy.

This article is part of our bedding guide, where you can compare related options.

“Pillow cover” can mean two things: a decorative cover for a throw pillow, or a cover or pillowcase for a sleeping pillow. They are sized and sewn differently. This guide explains both, covers common sizes, closure types, fabrics, how to match a cover to an insert and how to wash and care for them.

Elegant living room with a neutral sofa cover, decorative pillows, and stylish decor

Decorative Pillow Covers vs Pillowcases

Decorative (throw pillow) covers: cover a square or rectangular insert. They come in many fabrics, colors and designs. Used on sofas, beds, chairs and benches. See the lumbar pillow guide for rectangle styles. Pillowcases: cover a sleeping pillow. They are made for soft, breathable fabrics and easy washing. One guide says these cases are typically 20 by 30 inches (queen dimensions), with enough fabric drape to close around a 26-inch standard pillow using a deep envelope flap. Euro shams: large square covers, listed at 26 by 26 inches, often placed against the headboard. Bed pillow covers: one guide says throw pillow covers for bed pillows often come in larger sizes, such as 22 by 22 or 24 by 24 inches, to complement sleeping pillows. Pillow protectors: an extra layer between the pillow and the case that guards against sweat and allergens. See the mattress cover guide for similar protectors.

Common Sizes

Cover type	Typical size
Small square throw	16 or 18 inches
Medium square throw	20 inches
Large square throw	22 or 24 inches
Lumbar (rectangle)	About 12 by 20 inches (one listing: 11.81 by 19.68 inches)
Euro sham	26 by 26 inches
Standard pillowcase	About 20 by 26 inches (general)
Queen pillowcase	About 20 by 30 inches

One product listing offers three square sizes: 18 by 18 inches, 20 by 20 inches and 22 by 22 inches. A listing for a lumbar cover gives 11.81 by 19.68 inches. Sizes vary by brand, so check the product.

Common sofa pillow mix (general styling advice): large pillows in the corners, such as 22 or 24 inches, and smaller ones, such as 12 and 16 inches, in the middle. See the sofa set guide.

Closure Types

How the cover closes affects looks, ease of washing and fit.

Zipper: pillow covers with zipper closures provide a snug fit and are easy to remove, whereas envelope-style covers might offer a looser fit. Zippers suit body pillows, specialty shaped pillows or any application where the pillow must stay fully enclosed, such as allergy management or traveling. Envelope (overlap) closure: two pieces of fabric overlap at the back. No hardware. One source describes the envelope-style design as the easiest route for a homemade cover because it skips the zipper, buttons and anything that requires precision hardware. Envelope flaps on euro cases are simply tucked behind the pillow against the headboard and are not visible on a made bed. The pillow can peek out if the overlap is too small. Hidden zipper envelope: some envelope-style closures conceal a hidden zipper behind an extra piece of fabric. Button closure: decorative buttons at the back or the edge. Tie closure: ribbons or ties. Decorative. Open-edge sewn closure: sewn shut after inserting the pillow. Not removable.

Closure	Fit	Ease	Note
Zipper	Snug	Easy	Hardware can break
Envelope	Looser	Very easy	No hardware
Hidden zipper	Snug and neat	Easy	Slightly more complex
Button/tie	Decorative	Medium	More visible

Fabrics

Materials cited include premium polyester and cotton.

Key points: cotton. Breathable and easy to wash; linen. Textured and relaxed, wrinkles; polyester. Durable and affordable; velvet. Rich, soft, shows pressure marks. One velvet cover in the results is not machine washable, so check the label; boucle and chenille. Cozy and textured. See the boucle chair guide; faux leather and suede. Wipe-clean; outdoor fabrics. Resist sun and water; embroidered, printed or patterned fabrics. Add interest; satin and silk (for sleeping). Smooth. See the best bed sheets guide.

Choose fabric by use. A sofa pillow in a high-traffic room needs durability. A sleeping pillowcase needs softness and breathability.

Matching Cover to Insert

For example, a 20-inch cover with a 22-inch insert looks fuller. A cover the same size as the insert looks smoother but flatter. A cover larger than the insert looks baggy and wrinkly.

Check the product’s size guide. If you buy covers and inserts separately, a reliable throw pillow cover size guide is a smart approach, especially if you shop online. Measure the insert and measure the cover laid flat.

Stuffing notes: polyester fill is affordable and washable; down alternative feels soft; feather and down are soft and plush; foam inserts are firm.

See the lumbar pillow and cooling pillow guides for fill details.

Buying Tips

Decide the use: decorative or sleeping. Pick the size for your insert or pillow. Choose a closure that suits your washing habits. Check the fabric and the care label. Look at the seams. Strong, even stitching lasts. Check colorfastness. Dark colors may bleed. Check zippers for smooth action. Buy extra covers to swap by season. Read reviews for notes on size and color accuracy.

Care and Washing

Key points: read the care label; unzip or unfasten before washing; wash on a gentle cycle with cool or warm water; wash dark and bright covers separately at first; zip zippers to protect fabric; dry on low heat or air dry; iron on low if needed, inside out; spot clean velvet and delicate fabrics if the label says not to machine wash; wash sleeping pillowcases weekly; wash decorative covers every month or two, or as needed.

Styling with Pillow Covers

Key points: mix patterns and solids; mix textures: velvet, linen and knit; use odd numbers of pillows; repeat a color from a rug or art; use seasonal covers: warm tones in fall, light colors in spring; add a lumbar pillow for variety; keep a few neutral covers for flexibility.

What are the main strengths and weaknesses?

On the plus side: cheap way to update decor; easy to wash; protects inserts; many fabrics and styles. On the downside: wrong size looks baggy; some fabrics need special care; zippers can break; dyes can fade.

What mistakes should you avoid?

A few common mistakes are worth avoiding: buying the wrong size; ignoring the care label; choosing a fabric that does not suit the use; skipping the closure check; using a cover that is bigger than the insert; washing velvet in the machine when the label says not to.

Frequently Asked Questions

What is the difference between pillow covers and pillowcases?

Decorative covers fit throw pillow inserts. Pillowcases fit sleeping pillows and are sized for beds.

What size pillow cover should I buy?

Match the insert. Common sizes are 16 to 24 inches square, and lumbar covers are about 12 by 20 inches. Many people choose an insert one to two inches larger for fullness.

Are zipper or envelope covers better?

Zippers fit snugly. Envelope covers are simple and have no hardware.

Can I machine wash pillow covers?

Many can. Check the label, since some velvet covers cannot.

How often should I wash pillow covers?

Sleeping pillowcases weekly. Decorative covers every month or two.

What fabric is best for sofa pillow covers?

Durable fabrics like cotton, polyester blends and performance fabrics.

Conclusion

Pillow covers let you change your decor in minutes. Know whether you want a decorative cover or a sleeping pillowcase, choose the right size and closure and pick a fabric that suits the use.

Check the care label and keep a few spare covers. With the right ones, your pillows will look good and stay clean.