18 in. x 18 in. Inches Outdoor Pillow Inserts, Waterproof Decorative Throw Pillows Insert, Square Pillow Form (Set of 2) B08GPH741D - The Home Depot

Durable and good water impermeability, used with waterproof pillow cases for double protection, suitable for outside. 7D microfiber polyester filling (100% recycled), well-designed cushion stuffer. This.
Durable and good water impermeability, used with waterproof pillow cases for double protection, suitable for outside. 7D microfiber polyester filling (100% recycled), well-designed cushion stuffer. This pillow insert is not limited to indoor use, also can be used for outdoor and anywhere you want.

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Crafted from quick-drying, UV-protective fabric, these pillows won't fade after hours of fun in the sun to stay looking great all season long. Knife-edge finishes on each side create crisp corners and a simple, classic look to perfectly decorate your deck.

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