Deep Seat Cushions

Custom Deep Seat Outdoor Cushions for Every Patio Frame

Deep seat outdoor furniture — sectionals, club chairs, loveseats, and wide patio sofas — needs cushions that match the actual seat depth of the frame. Seat depths on deep seating furniture typically run 20 to 24 inches. A depth of 20 to 22 inches supports upright sitting for conversation and dining, while 23 to 24 inches is better for leaning back and lounging. Standard off-the-shelf cushions rarely hit those dimensions exactly, which is why a custom outdoor seat cushion cut to your frame is the more reliable option.

This collection covers the most common deep seat sizes and shapes — square, rectangular, and trapezoid — as seat-and-back sets or replacement covers for frames where the foam is still good. All options use outdoor and patio cushion fabric grades rated for full sun, rain, and year-round patio use.

Browse Deep Seat Cushion Options

• 26 x 24 Deep Seat Cushions — our most popular deep seat size, seat and back cut to a 26 by 24 inch frame in high-density foam and weather-resistant fabric.
• 24 x 24 Deep Seat Cushions — the standard deep seating size, matching most club chairs and sectional seats.
• 22 x 24 Deep Seat Cushions — for upright deep seating frames with a shallower 22 inch seat depth.
• Deep Seat Cushion Set (Seat + Back) — a matching seat cushion and angled back pillow, sized together for a clean fit on any deep-seating frame.
• Extra Deep Outdoor Cushions — for oversized lounge frames with seat depths beyond 24 inches.
• Deep Seat Cushion Covers — replacement covers in your custom size, for frames where the foam is still good but the cover has faded or worn through.

Fabric Options for Deep Seat Outdoor Cushions

Performance fabric is the standard choice for deep seat patio cushions — it is built specifically for outdoor use and resists fading, tearing, weather, and stains better than standard indoor fabric. Solution-dyed polyester and performance canvas are the two most practical choices for full-sun patio exposure: the dye runs through the entire fiber rather than sitting on the surface, so UV degradation does not strip the color the way it does with printed or coated fabrics. For covered patios and screened porches with less direct sun, a wider range of outdoor upholstery fabrics is available in the same custom sizing. All covers include a removable YKK zipper for washing or seasonal replacement.

Foam Density for Deep Seat Outdoor Cushions

High-density foam provides strong support and resilience for outdoor cushions and will not collapse under prolonged use. For optimal comfort, a seat cushion thickness of 4 inches or more is recommended for deep seat applications. Standard foam cores can look fine initially, but after a month of outdoor use the cushion will appear worn — high-density foam with bounce-back resilience is what holds its shape season after season. For patio furniture left outside year-round, a moisture-resistant foam wrap adds an extra layer of protection against pooling water and humidity in the foam core. Custom thickness is available on every product page in this collection.

Deep Seat Cushion FAQs

What is a deep seat cushion?
A deep seat cushion is a thick cushion set — a seat cushion plus a matching back pillow — made for deep seating patio furniture, where seat depths run about 20 to 24 inches. They are usually 4 to 6 inches thick, much deeper than a standard 2 to 3 inch chair pad.

How do I measure for replacement deep seat cushions?
Measure the seat pan of your frame: depth from the front edge to the back, and width from side to side, then measure the back height separately. Order the seat and back to those exact dimensions rather than a universal set, since deep seating frames vary widely.

What size deep seat cushions do I need?
The most common deep seat sizes are 24x24, 22x24, and 26x24 inches, but frames vary. Measure your seat pan and order a custom size cut to fit — an exact match sits cleanly without gaps or overhang.

Can I replace just the covers if the foam is still good?
Yes. If the foam still holds its shape but the fabric has faded or worn, order replacement covers in your custom size and keep the existing foam.