Oubonun 18 x 18 Pillow Inserts Set of 4 — 100% Cotton Shell, High‑Loft 3D Polyester Fill

Oubonun 18 x 18 Throw Pillow Inserts Set of 4 are plush, machine-washable cushion cores made from 100% cotton shells filled with high-resilience 3D polyester for a consistently full, supportive look.

These four 18" x 18" pillow inserts are designed as ready-to-use cores for decorative covers, combining a durable woven cotton shell with noise-free 3D polyester fill. Vacuum-sealed for compact shipping, the inserts regain loft after opening; pressing and fluffing speeds this up. Their hidden zipper and sturdy diagonal high-density weave keep the fill secure while giving covers a refined, three-dimensional appearance.

How quickly do these inserts regain shape after unpacking?

Because the set ships vacuum-packed, the filling may appear compressed on arrival. Pressing, fluffing, or leaving the insert to rest for a few hours helps the polyester expand back to its intended loft.

• Vacuum-sealed to save space during shipping
• Press and knead to redistribute filling
• Allow several hours for full expansion
• Consider a slightly larger insert for an extra-plush finish

What materials and construction make these inserts durable?

The outer shell is 100% cotton woven with a diagonal high-density stripe technique that reduces wrinkling and adds surface texture. Inside, a high-resilience 3D polyester fill resists clumping and returns quickly to shape after compression.

• 100% cotton shell with diagonal high-density weave for longevity
• Noise-free 3D polyester filling for softness and support
• Hidden zipper matched to cover color for clean finish
• Stitched to reduce fill migration and maintain loft

How do I care for and maintain these pillow inserts?

These inserts are designed for easy laundering: use a mild detergent and tumble-dry to restore fluff. Regular washing and drying keep the fill evenly distributed and prolong the usable life of the insert.

• Machine wash on gentle cycle with mild detergent
• Tumble dry low to reactivate loft and reshape
• Spot-clean for small stains to avoid full wash cycles
• Re-fluff by hand after washing for even distribution

Will these inserts work with my decorative covers?

The 18 x 18 size fits most standard square covers and provides a tailored look when filled correctly. For a fuller, more overstuffed aesthetic, choose a cover slightly smaller than the insert or opt for a larger insert size where available.

• Standard 18" x 18" size fits most square covers
• Choose a slightly larger insert for a firmer, plumped appearance
• Hidden zipper allows easy insertion and removal from covers
• Works with cotton, linen, velvet, and woven decorative covers

Who is this for: Designers, homeowners, and rental hosts who want dependable, crisp-looking cushion cores that hold shape and look finished on a variety of covers. These inserts are also ideal for anyone refreshing living room sofas, bedroom accent pillows, or staging spaces where consistent appearance and easy care matter. The set-of-four offers coordinated replacement or a quick style update for multiple pillows at once.