Arden Selections Outdoor Chair Cushion 21 x 20 Onyx Cebu — Rain‑Proof, Fade‑Resistant Two‑Piece Seat & Back

The Arden Selections Outdoor Chair Cushion (21 x 20) is a rain-proof, fade-resistant seat and back set designed to fit most standard dining chairs while staying comfortable and low-maintenance.

This two-piece cushion set combines a 21 x 20 in seat pad with a 21 x 24 in back pad to create an integrated, weather-ready solution for outdoor dining and patio seating. Made from 100% polyester fabric with enhanced UV protection and an eco-friendlier PFAS-free C0 treatment, the Onyx Cebu color keeps a deep, modern look while resisting sun damage and light rain. Inside, partially recycled polyester fiber fill supports long-term shape retention and a comfortable sit without frequent fluffing.

How does this cushion handle rain and outdoor conditions?

The fabric is treated to resist water and the C0 PFAS-free finish offers a practical, more sustainable water-repellent option. UV-resistant polyester protects the color from fading, and the materials are easy to wipe clean after exposure to the elements.

• Rain-proof surface sheds light moisture and dries quickly
• PFAS-free C0 treatment reduces long-term environmental impact
• UV-enhanced polyester resists fading in sunny areas
• Soap-and-water cleaning keeps maintenance simple

Will the 21 x 20 size fit my dining chair or patio set?

The cushions are built to match most standard outdoor dining chairs with a combined seat and back layout. The seat pad measures 21 in W x 20 in L and the back pad is 21 in W x 24 in H, providing broad compatibility and balanced support for typical chair frames.

• Overall cushion design: 21 in W x 44 in H x 4.5 in thickness
• Seat dimension: 21 in W x 20 in L
• Back dimension: 21 in W x 24 in H
• Four sets of ties secure the cushion to chair frames

How comfortable and durable is the fill and construction?

Inside each piece is partially recycled polyester fiber fill that holds shape longer than loose batting and offers consistent sitting comfort. The 4.5-inch overall thickness balances cushioning with chair stability for dining and casual seating use.

• Partially recycled fiber fill helps maintain loft over time
• Thick 4.5 in profile for supportive seating without sinking
• Stitched construction resists shifting and wear
• 1-year limited fabric and manufacturing warranties provide coverage

How easy is it to keep the cushion clean and in place?

Maintenance is straightforward: most spills wipe away with mild soap and water, and the cushion fabric resists stains better than untreated textiles. Four sets of ties secure the cushion to your chair so it stays put through normal use and breezy patios.

• Simple spot cleaning with soap and water
• Four tie sets prevent sliding and bunching
• Colorfast fabric reduces visible wear from washing
• Compact two-piece design is easy to remove and store

Who this cushion is for: Shoppers seeking a low-maintenance, durable outdoor cushion in a dark Onyx tone will find this Arden Selections set especially useful. It's aimed at homeowners and renters who want a weather-ready seat for dining chairs, patios, decks, and outdoor bistros—people who value fade resistance, simple cleaning, eco-friendlier water repellency, and a reliable one-year limited warranty.