foam for cushions

The right foam for cushions is the difference between a seat that stays plush for years and one that flattens by next season. Whether you're reupholstering dining chairs, building a window seat, or refreshing patio furniture, what goes inside matters as much as the fabric on the outside.

What to Look For in Cushion Foam

Density and Firmness

Density tells you how durable a foam is, while firmness describes how it feels when you sit down. High-density foam holds its shape under daily use, making it a smart choice for seat cushion foam on chairs, benches, and sofas. Softer foam works well for back cushions and throw pillows.

Thickness

Thicker upholstery foam adds comfort and a fuller, tailored look. Thinner sheets are better for headboards, chair pads, and padded craft projects.

Indoor vs. Outdoor Use

Outdoor cushion foam should drain and dry quickly to help resist mildew. For indoor furniture, wrapping foam in polyester batting softens the edges and helps your fabric cover fit smoothly.

Find Your Perfect Fit

Measure your frame, decide how firm you want the seat to feel, and pick a foam that suits where the piece will live. Browse the foam cushion inserts and sheets below to find the right match for your next upholstery project.