A chair that sinks by noon leaves the sitter peering up at a monitor, and that is the problem a best office chair height cushion is made to solve. A cushion that raises the seat itself keeps the desk, the keyboard and the screen at a comfortable working height, without a stack of books under the seat. We compared the chair height cushions below by stated size, fill, cover, grip and care, using only what each listing publishes.
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Quick picks
Top Pick HOMBYS Extra Thick Cushion: Adjustable buckle, center groove and wipe-clean faux leather cover Check price on Amazon
Largest Seat WSGJHB Large Seat Cushion: 20 x 20 inch seat with contoured groove and anti-slip bottom Check price on Amazon
Washable Cover MABOZOO Extra Thick Cushion: Removable zippered cover, memory foam over sponge fill Check price on Amazon
Dual-Layer Foam VGLCBBSTS Booster Cushion: Soft upper foam over a firm base, mesh-style cover Check price on Amazon
Title-Only Listing BlissTrends Seat Cushion: Memory foam seat cushion; no further details stated Check price on Amazon
The picks
| # | Product | Office Score | Buy |
|---|---|---|---|
| 1 | HOMBYS Extra Thick Cushion | 9.7/10 | Buy on Amazon |
| 2 | WSGJHB Large Seat Cushion | 9.6/10 | Buy on Amazon |
| 3 | MABOZOO Extra Thick Cushion | 9.6/10 | Buy on Amazon |
| 4 | VGLCBBSTS Booster Cushion | 9.6/10 | Buy on Amazon |
| 5 | BlissTrends Memory Foam Cushion | 9.6/10 | Buy on Amazon |
HOMBYS Extra Thick Cushion
An 18 x 16 x 6 inch booster with a center groove, an adjustable buckle and a wipe-clean faux leather cover.
Pros
- 80% shredded memory foam with 20% polyester fiber fill
- Center groove shaped to hold a stable sitting position
- Adjustable buckle plus carry handle for placement and portability
- Faux leather cover wipes clean with a damp cloth
Cons
- Spec table lists item dimensions as 18 x 16 x 0.1 inches, against the 6 inch height in the title and bullets
- No warranty term is stated
- Black only in the listing data
- Indoor use only per the spec table
Detailed Review
The listing states an 18 x 16 x 6 inch cushion filled with 80% shredded memory foam and 20% polyester fiber, with a center groove, an adjustable buckle, a carry handle and a wipe-clean faux leather cover. The spec table contradicts the height, listing item dimensions of 18 x 16 x 0.1 inches; the title and bullets state 6 inches, and this review trusts the title and bullets. The listing also states a weight of 2.11 kg and indoor use only.
Who it's for: sitters who want a thick booster with a buckle that holds placement and a cover that wipes clean. Who should skip it: anyone who needs a stated warranty term or a size beyond 18 x 16 inches.
Its Office Score of 9.7/10 comes from performance 30/35, build 22/25, value 21/25, safety 8/10 and warranty 0/5: 81 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Size | 18 x 16 x 6 inches |
|---|---|
| Fill | 80% shredded memory foam, 20% polyester fiber |
| Cover | Faux leather, wipe-clean |
| Weight | 2.11 kg |
Figures as published on the retailer listing, collected 25 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. Adjustable buckle and center groove to hold the cushion in place, so safety scores 8 of 10. No warranty term, so warranty scores zero. See How We Pick.
Comfort, not treatment. Cushions, pillows, footrests and chair mats change how a desk feels; they are not medical devices. Check the size against your chair or floor and keep mats flat so casters do not catch.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
WSGJHB Large Seat Cushion
A 20 x 20 x 6 inch cushion with a contoured middle groove, an anti-slip bottom and a built-in handle.
Pros
- Largest seat here at 20 x 20 inches
- Contoured middle groove and anti-slip bottom
- Air-layer fabric with high elastic pp cotton filling
- Built-in handle for moving between chairs
Cons
- No warranty term is stated
- Cover care beyond breathable fabric is not described
- Compression packaging needs 24 to 48 hours to fully decompress
- No fill weight or density is stated
Detailed Review
The listing states a 20 x 20 x 6 inch cushion with a contoured middle groove, an anti-slip bottom, air-layer fabric and high elastic pp cotton filling, plus a built-in handle. It names office chairs, car seats, gaming chairs, dorm chairs, wheelchairs and truck seats among its uses. The compressed packaging needs 24 to 48 hours to fully decompress after opening, and the cover may need adjusting to fit correctly.
Who it's for: sitters on a wide chair seat who want the largest cushion here. Who should skip it: anyone who needs a stated warranty term or described cover care.
Its Office Score of 9.6/10 comes from performance 30/35, build 21/25, value 21/25, safety 7/10 and warranty 0/5: 79 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Size | 20 x 20 x 6 inches |
|---|---|
| Fill | High elastic pp cotton |
| Cover | Air-layer fabric |
| Grip | Anti-slip bottom |
Figures as published on the retailer listing, collected 25 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. Anti-slip bottom design, so safety scores 7 of 10. No warranty term, so warranty scores zero. See How We Pick.
Comfort, not treatment. Cushions, pillows, footrests and chair mats change how a desk feels; they are not medical devices. Check the size against your chair or floor and keep mats flat so casters do not catch.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
MABOZOO Extra Thick Cushion
An 18 x 16 x 6 inch cushion with memory foam over sponge, a removable zippered cover and a carry handle.
Pros
- Memory foam upper layer over a sponge base layer
- Removable zippered cover for cleaning
- Air-layer fabric described as breathable and soft
- Carry handle for portability
Cons
- One bullet states a 9 inch thickness while the title states 6 inches
- No warranty term is stated
- Compressed packaging needs beating and shaking to regain shape within 48 hours
- Navy Blue only in the listing data
Detailed Review
The listing states an 18 x 16 x 6 inch cushion with memory foam over sponge, an air-layer fabric cover with a zipper, and a carry handle. One bullet contradicts the title, stating a 9 inch thickness; this review trusts the 6 inch figure in the title. The package arrives compressed and regains shape within 48 hours after beating and shaking.
Who it's for: sitters who want a removable, washable cover on a thick booster. Who should skip it: anyone who needs a stated warranty term or a single consistent thickness figure.
Its Office Score of 9.6/10 comes from performance 29/35, build 21/25, value 20/25, safety 7/10 and warranty 0/5: 77 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Size | 18 x 16 x 6 inches |
|---|---|
| Fill | Memory foam over sponge |
| Cover | Air-layer fabric, removable zippered |
| Color | Navy Blue |
Figures as published on the retailer listing, collected 25 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. Non-slip cushion with carry handle, so safety scores 7 of 10. No warranty term, so warranty scores zero. See How We Pick.
Comfort, not treatment. Cushions, pillows, footrests and chair mats change how a desk feels; they are not medical devices. Check the size against your chair or floor and keep mats flat so casters do not catch.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
VGLCBBSTS Booster Cushion
A 6-inch booster with dual-layer foam, a textured anti-slip bottom and a removable washable cover.
Pros
- Dual-layer foam: soft upper layer, firm base layer
- Textured anti-slip bottom for office, task, gaming and car seats
- Mesh-style fabric cover allows airflow
- Zippered cover removes for cleaning
Cons
- No warranty term is stated
- Spec table lists recommended uses as NO, which reads as incomplete
- Vacuum-packed: needs 24 to 48 hours to fully expand
- L-shape listed in the spec table without explanation
Detailed Review
The listing states a 6-inch booster with dual-layer foam, a textured anti-slip bottom and a mesh-style cover with a zipper for removal. The spec table lists an 18 x 16 x 6 size and a weight of 1.1 kg, but it also lists recommended uses as NO and an L-shape without explanation, which reads as incomplete data. The vacuum-packed cushion fully expands to 6 inches within 24 to 48 hours after opening.
Who it's for: sitters who want a soft top layer over a firm base with airflow. Who should skip it: anyone who needs a stated warranty term or a fully explained spec table.
Its Office Score of 9.6/10 comes from performance 29/35, build 20/25, value 20/25, safety 7/10 and warranty 0/5: 76 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Size | 18 x 16 x 6 inches |
|---|---|
| Fill | Dual-layer foam |
| Cover | Mesh-style, removable |
| Weight | 1.1 kg |
Figures as published on the retailer listing, collected 25 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. Textured anti-slip bottom, so safety scores 7 of 10. No warranty term, so warranty scores zero. See How We Pick.
Comfort, not treatment. Cushions, pillows, footrests and chair mats change how a desk feels; they are not medical devices. Check the size against your chair or floor and keep mats flat so casters do not catch.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
BlissTrends Memory Foam Cushion
A 3.3-inch thick memory foam seat cushion with removable velvet cover.
Pros
- 3.3-inch thick high-density foam
- Removable machine-washable velvet cover
- Non-slip bottom stays in place
- Fits office chairs, cars and wheelchairs
Cons
- No warranty term stated
- No safety certification stated
- Velvet may trap heat
- 18.11 by 16.14 inches may overhang small chairs
Detailed Review
BlissTrends lists a 3.3-inch thick high-density memory foam cushion at 18.11 by 16.14 by 4.76 inches. The removable velvet cover is machine-washable, and the anti-slip bottom keeps it in place. It suits office chairs, car seats and wheelchairs.
The thickness suits long sitting. Skip it for small chairs; it may overhang.
Its Office Score of 9.6/10 comes from performance 30/35, build 21/25, value 20/25, safety not scored (non-powered gear) and warranty 0/5: 71 of 90 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Thickness | 3.3 in |
|---|---|
| Size | 18.11x16.14 in |
| Cover | Velvet, washable |
| Base | Non-slip |
Figures as published on the retailer listing, collected 23 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. This product does not plug in or run on a battery, so safety is not part of its score. No warranty term, so warranty scores zero. See How We Pick.
Comfort, not treatment. Cushions, pillows, footrests and chair mats change how a desk feels; they are not medical devices. Check the size against your chair or floor and keep mats flat so casters do not catch.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
As an Amazon Associate I earn from qualifying purchases.
More picks to compare
MABOZOO Grey Extra Thick CushionGrey version with memory foam over sponge fill and a removable cover.Check on Amazon
PRIMART Adjustable Seat CushionAdjustable layers switch between 2-inch and 3-inch heights with soft to firm feel.Check on Amazon
varrisin Extra Thick Cushion5.9-inch foam cushion with a removable mesh fabric cover and anti-slip dots.Check on Amazon
Compare the picks
| Cushion | Office Score | Size | Fill | Cover | Grip | Amazon |
|---|---|---|---|---|---|---|
| HOMBYS Extra Thick Cushion | 9.7/10 | 18 x 16 x 6 inches | 80% shredded memory foam, 20% polyester fiber | Faux leather, wipe-clean | Adjustable buckle | View on Amazon |
| WSGJHB Large Seat Cushion | 9.6/10 | 20 x 20 x 6 inches | High elastic pp cotton | Air-layer fabric | Anti-slip bottom | View on Amazon |
| MABOZOO Extra Thick Cushion | 9.6/10 | 18 x 16 x 6 inches | Memory foam over sponge | Air-layer fabric, removable | Non-slip | View on Amazon |
| VGLCBBSTS Booster Cushion | 9.6/10 | 18 x 16 x 6 inches | Dual-layer foam | Mesh-style, removable | Textured anti-slip bottom | View on Amazon |
| BlissTrends Seat Cushion | 9.6/10 | Not stated | Memory foam | Not stated | Not stated |
Specifications are manufacturer rated as listed, collected 25 October 2026. None of the five listings states a warranty term, and four state a grip feature that holds the cushion in place.
How we scored them
The Office Score weighs performance, build, value, safety and warranty. For a height cushion, safety means a stated grip feature that holds the cushion in place on the chair: an anti-slip bottom, a non-slip base or an adjustable buckle. Four of the five listings state such a feature, and none of the five states a warranty term, so warranty scores sit at zero across the board. How we pick explains the weights.
| Product | Office Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| HOMBYS Extra Thick Cushion | 9.7 | 30 | 22 | 21 | 8 | 0 |
| WSGJHB Large Seat Cushion | 9.6 | 30 | 21 | 21 | 7 | 0 |
| MABOZOO Extra Thick Cushion | 9.6 | 29 | 21 | 20 | 7 | 0 |
| VGLCBBSTS Booster Cushion | 9.6 | 29 | 20 | 20 | 7 | 0 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.
How to choose the best office chair height cushion
Start with the stated size
Size is the first check, because a cushion that overhangs the seat slides around and one that is far smaller leaves the sitter perched on an edge. Three picks state 18 x 16 x 6 inches: the HOMBYS, the MABOZOO and the VGLCBBSTS. The WSGJHB states 20 x 20 x 6 inches, the largest seat here, which suits a wide chair seat. Measure the chair seat before ordering, then match it against the stated size rather than guessing from the product name. The seat cushions and lumbar pillows category holds the rest of this site’s seating pads for comparison.
Match the fill to the seat
Fill decides how the cushion feels after hours at the desk. The HOMBYS uses 80% shredded memory foam with 20% polyester fiber. The MABOZOO layers memory foam over sponge, and the VGLCBBSTS pairs a soft upper foam layer with a firm base layer. The WSGJHB uses high elastic pp cotton filling under an air-layer fabric. The BlissTrends listing names memory foam and nothing else, so it cannot be compared on fill depth. A layered fill suits a sitter who wants softness on top and structure underneath; a single fill suits a sitter who prefers one consistent feel.
| Cushion | Size | Fill | Cover |
|---|---|---|---|
| HOMBYS Extra Thick Cushion | 18 x 16 x 6 inches | 80% shredded memory foam, 20% polyester fiber | Faux leather, wipe-clean |
| WSGJHB Large Seat Cushion | 20 x 20 x 6 inches | High elastic pp cotton | Air-layer fabric |
| MABOZOO Extra Thick Cushion | 18 x 16 x 6 inches | Memory foam over sponge | Air-layer fabric, removable |
| VGLCBBSTS Booster Cushion | 18 x 16 x 6 inches | Dual-layer foam | Mesh-style, removable |
| BlissTrends Seat Cushion | Not stated | Memory foam | Not stated |
Figures as stated in each listing. A cushion with no stated size cannot be matched to a chair seat, which is why the title-only listing sits last.
Check the grip and the cover care
A height cushion that creeps forward during the day is worse than no cushion at all. The HOMBYS adds an adjustable buckle to hold placement, the WSGJHB states an anti-slip bottom, the MABOZOO is listed as non-slip, and the VGLCBBSTS uses a textured anti-slip bottom. Cover care splits the same way: the MABOZOO and VGLCBBSTS covers remove through a zipper for cleaning, the HOMBYS faux leather wipes clean with a damp cloth, and the WSGJHB listing does not describe cover care. If the chair rolls on a hard floor, a chair mat under it keeps the whole setup from wandering. At a standing desk, check the cushion height against the desk height before settling in for a long session.
Read the listing twice before you buy
Two listings contradict themselves, and the contradictions matter. The MABOZOO title states 18 x 16 x 6 inches while one bullet states a 9 inch thickness; the title figure is the one to trust. The HOMBYS spec table lists item dimensions of 18 x 16 x 0.1 inches against 6 inches in the title and bullets; again, the title and bullets win. The VGLCBBSTS spec table lists recommended uses as NO and an L-shape without explanation, which reads as incomplete data rather than a feature. Compressed cushions also need patience: the WSGJHB needs 24 to 48 hours to fully decompress, the MABOZOO regains shape within 48 hours after beating and shaking, and the VGLCBBSTS fully expands within 24 to 48 hours after opening.
Setup Notes
- Measure the chair seat and compare it with the stated cushion size: 18 x 16 inches on three picks, 20 x 20 inches on the WSGJHB.
- Keep charging cables clear of the cushion edge so the cushion sits flat on the seat.
- Allow 24 to 48 hours for a vacuum-packed cushion to fully expand after opening.
- Check the grip feature before daily use: a buckle, an anti-slip bottom or a non-slip base, as stated on four of the five listings.
Frequently Asked Questions
Do I need a headrest on my office chair?
A headrest and a height cushion solve different problems. None of the listings here includes a headrest; a height cushion changes seat height, while head support comes from the chair itself or an add-on headrest.
How do I clean mesh on an office chair?
For these cushions, the mesh-style cover on the VGLCBBSTS removes through a zipper for cleaning, and the MABOZOO cover is also removable through a zipper. The HOMBYS faux leather cover wipes clean with a damp cloth and mild detergent.
How do I clean casters on an office chair?
Casters are part of the chair base, not of these cushions, so none of the listings covers caster care. Lift the cushion off the seat before tipping the chair to reach the casters, and keep the cushion away from cleaning sprays used on the base.
Why is my office chair so squeaky?
A squeak comes from the chair mechanism or the base, not from a seat cushion, and none of these listings claims anything about chair noise. A height cushion changes the seat height; it does not address a noisy mechanism.
Will a height cushion fit a gaming chair?
The WSGJHB, MABOZOO and VGLCBBSTS listings all name gaming chairs among their uses. Match the stated cushion size against the gaming chair seat before ordering, since gaming seats vary in width.
Related guides
See every seat cushions and lumbar pillows guide and all office chairs and seating guides. Also see our best lumbar pillow for office chair. Also see our best seat cushion for international flights.
More picks: gaming chairs, chair mats, casters and footrests, standing desks.
