Ranked on foam thickness, back height, and how well the set fills the chair, with pattern treated as a bonus, not a substitute for fit.
The Best Deep Seat Outdoor Cushions (2026)
Deep seat cushions compared: two-piece foam and fibre sets that fill a deep patio chair properly.
Our top picks at a glance
Best deep seat overall
Arden Selections Outdoor Foam Deep Seat Cushion Set 24 x 24, Tan Diamond TrellisDeep seat patio chairs, sofas, and couches where a firm foam seat and a tall pillow back are wanted.
Best premium deep seat
Classic Accessories Montlake FadeSafe Lounge Chair Cushion Set 23 x 45, Heather FernLounge chairs and deep seat chairs where a thick, premium-feeling set in a rich green is wanted.
Best patterned deep seat
Greendale Home Fashions Outdoor Reversible 2-Piece Deep Seat Cushion Set, AzureDeep seat chairs where a bold blue pattern is wanted, and buyers who like a reversible cushion they can flip.
The Arden Outdoor Foam Deep Seat Cushion Set 24 x 24 in Tan Diamond Trellis is the deep seat pick: firm foam, a tall pillow back, and ties that hold it in place. The Classic Accessories Montlake Lounge Chair Cushion Set 23 x 45 in Heather Fern is the premium pick for thickness, and the Greendale Deep Seat Cushion Set in Azure is the patterned pick.
The picks, ranked
| Pick | Seat bottom | Pillow back | Fill | Buy |
|---|---|---|---|---|
| Best deep seat overallArden Selections Outdoor Foam Deep Seat Cushion Set 24 x 24, Tan Diamond Trellis | 24 x 24 x 5.75 inches | 24 x 21 x 6.5 inches | High-density polyurethane foam | Check price |
| Best premium deep seatClassic Accessories Montlake FadeSafe Lounge Chair Cushion Set 23 x 45, Heather Fern | - | - | - | Check price |
| Best patterned deep seatGreendale Home Fashions Outdoor Reversible 2-Piece Deep Seat Cushion Set, Azure | - | - | - | Check price |
 Best budget deep seatFavoyard Outdoor Seat Cushion Set 19 x 19, Beige | - | - | - | Check price |
Best deep seat overall
Arden Selections Outdoor Foam Deep Seat Cushion Set 24 x 24, Tan Diamond Trellis
The pick for most people: a firm foam deep seat set with a trellis pattern that holds its shape and stays put with two sets of ties.
Strengths
- The high-density USA-made foam keeps the seat thick and supportive instead of flattening after a few weeks of sitting.
- The pillow back measures 24 inches wide by 21 inches long and 6.5 inches thick, so it fills a deep seat chair properly.
- Two sets of ties on the seat bottom hold the cushion in place on the chair, and the printed polyester fabric resists fading.
Limitations
- At 24 inches square it is too wide for standard dining chairs and smaller patio chairs, so measure the frame first.
- The foam arrives compressed and needs time to expand to its full thickness before first use.
- The firm feel suits buyers who like support, but it will feel hard to anyone expecting a soft fibre cushion.
What owners report
Commonly praised
- Owners say the foam stays thick through a full season of daily sitting
- Many like the way the two ties keep the seat from sliding forward
- Buyers praise the trellis pattern for looking smarter than a plain solid
Common complaints
- Some find the back cushion taller than their chair frame
- A few say the set arrives tightly rolled and needs time to plump up
- Some note the fabric shows dust and pollen quickly
Recurring themes from owner reviews on retailers and forums, summarised by our editors. Updated October 2026.
| Seat bottom | 24 x 24 x 5.75 inches |
|---|---|
| Pillow back | 24 x 21 x 6.5 inches |
| Fill | High-density polyurethane foam |
| Cover | Printed polyester |
| Firmness | Firm |
| Ties | Two sets on the seat bottom |
Best for: Deep seat patio chairs, sofas, and couches where a firm foam seat and a tall pillow back are wanted.
Skip if: Your chair frame is smaller than 24 inches, or you want a soft fibre fill rather than firm foam.
Best premium deep seat
Classic Accessories Montlake FadeSafe Lounge Chair Cushion Set 23 x 45, Heather Fern
The premium deep seat pick: a thick two-piece lounge set in heather fern, with 5 inch foam and the same FadeSafe fabric as the chaise.
Strengths
- At 5 inches thick the set is noticeably plusher than the 3 inch chaise pad, which suits long evenings outside.
- The FadeSafe solution-dyed fabric resists fading, and the heather fern green is a deep, natural tone that suits garden planting.
- The two-piece set covers seat and back properly, and the maker backs it with a 1-year limited warranty.
Limitations
- It costs more than the other deep seat sets here, and the premium buys thickness and fabric rather than extra features.
- The set is heavy to carry in and out of storage, so it suits a chair that stays in one place for the season.
- At 23 inches wide and 45 inches long it needs a full-size lounge chair, and it will overhang a smaller frame.
What owners report
Commonly praised
- Owners say the fern green reads richer in person than on screen
- Many like the thick seat for long evenings outside
- Buyers praise the zip covers for coming off when a wash is needed
Common complaints
- Some find the set heavy to carry in and out of storage
- A few say the back cushion sits proud of shorter chair frames
- Some wish the green stayed as deep after a summer in full sun
Recurring themes from owner reviews on retailers and forums, summarised by our editors. Updated October 2026.
| Size | 23 x 45 inches |
|---|---|
| Thickness | 5 inches |
| Colour | Heather Fern |
| Set | 2-piece lounge chair set |
| Fabric | FadeSafe solution-dyed polyester |
| Warranty | 1-year limited |
Best for: Lounge chairs and deep seat chairs where a thick, premium-feeling set in a rich green is wanted.
Skip if: Your budget stops at the mid-range sets, or your chair is narrower than 23 inches.
Best patterned deep seat
Greendale Home Fashions Outdoor Reversible 2-Piece Deep Seat Cushion Set, Azure
The patterned deep seat pick: a reversible two-piece set in a blue and white tile print, made in durable outdoor polyester.
Strengths
- The Azure tile pattern in blue and white lifts a plain patio set and hides small marks better than a solid pale colour.
- The two-piece set is reversible, so either face can sit outwards, which doubles the usable life of the look.
- The durable outdoor polyester fabric is made to withstand the elements, and Greendale has made home products in the US since 1954.
Limitations
- The pattern is busy up close, so buyers who want a calm solid should choose the Arden or Montlake sets instead.
- The seat is softer than the Arden foam set, so it flattens a little faster under daily use.
- The set is sized for standard deep seat chairs, so measure the frame before ordering, since a wide chair will leave gaps at the sides.
What owners report
Commonly praised
- Owners say the blue tile pattern lifts a plain patio set
- Many like having two matching pieces that can swap sides
- Buyers praise the reversible faces for hiding a stain in a pinch
Common complaints
- Some find the seat runs a touch small for wider deep chairs
- A few say the cushion flattens a little with daily use
- Some note the pattern looks busier up close than in photos
Recurring themes from owner reviews on retailers and forums, summarised by our editors. Updated October 2026.
| Set | 2-piece reversible deep seat set |
|---|---|
| Pattern | Azure, blue and white tile |
| Fabric | Durable outdoor polyester |
| Model | AZ7825-INDIGO |
| Use | Indoor and outdoor |
Best for: Deep seat chairs where a bold blue pattern is wanted, and buyers who like a reversible cushion they can flip.
Skip if: You want a plain solid colour, or you need the thick foam support of the Arden set.
Best budget deep seat
Favoyard Outdoor Seat Cushion Set 19 x 19, Beige
The budget waterproof pick: a beige seat and back set with removable covers, a carry handle, and adjustable straps.
Strengths
- The covers are removable with a hidden zip, so a dirty cover can come off for a wash instead of the whole cushion needing a scrub.
- The waterproof fabric and the adjustable straps suit outdoor use, and the carry handle makes the set easy to move to storage.
- The beige colour blends with most patio furniture, so the set suits a mixed set of chairs without clashing.
Limitations
- At 19 by 19 inches the set is sized for standard chairs, and it will look small on a deep seat chair.
- The back cushion is softer than the seat, so it gives less support than the Arden high-back cushion.
- The straps need adjusting each time the set is moved, or the cushions can sit slightly off centre.
What owners report
Commonly praised
- Owners say the beige tone blends with most patio furniture
- Many like the removable covers for a quick wash
- Buyers praise the handle for carrying the set to storage
Common complaints
- Some find the back cushion softer than the seat
- A few say the straps need adjusting each time the set is moved
- Some note the beige shows dirt sooner than darker colours
Recurring themes from owner reviews on retailers and forums, summarised by our editors. Updated October 2026.
| Size | 19 x 19 inches |
|---|---|
| Colour | Beige |
| Set | Seat and back cushion set |
| Cover | Removable, hidden zip |
| Features | Handle and adjustable straps |
Best for: Patio chairs and sofas where a waterproof seat and back set is wanted for the least money.
Skip if: You need a deep seat size larger than 19 inches, or you want a firm foam fill rather than a soft set.
Questions, answered
What is a deep seat cushion?
A deep seat cushion is a two-piece set for a deep patio chair: a thick seat bottom and a tall pillow back. The seat is usually 24 by 24 inches, and the back is 24 by 21 inches. Standard dining chair pads are too small for these chairs, and a deep seat set is the only shape that fills the frame properly.
Foam or fibre fill for a deep seat?
Foam holds its shape and supports the sitter for longer, which suits a chair used every day. Fibre fill is softer from the first use but goes flat faster under daily use. For a deep seat chair that sees regular sitting, foam is the better buy.
How do I stop a deep seat cushion sliding?
Use the ties. The Arden set has two sets of ties on the seat bottom, and they should be fastened to the chair frame, not left loose. A cushion that is the right size for the chair slides less than one that is too small, so measure the frame before ordering.