Prolonged sitting concentrates your weight on the sitting bones and tailbone, restricting circulation and causing discomfort. A well-designed seat cushion spreads your weight across a larger area and cradles the sitting bones. This is general guidance, not medical advice. Prices were checked on Amazon UK in September 2026, and a few brands we used to list (Kieba, Tempur) are not there, so verified alternatives are named.
Key features to consider
- Foam type: high-density memory foam holds support without bottoming out; gel-topped cushions feel cooler and springier.
- Shape: U-shaped or horseshoe cut-outs relieve coccyx sensitivity, wedge cushions tilt the pelvis forward and flat contoured pads give general comfort.
- Removable, machine-washable covers and a non-slip rubberised base.
- Thickness of about 5–8cm suits standard office chairs; choose firmer for extended use.
1. Cushion Lab pressure relief seat cushion: best overall
£99.90, rated 4.3 stars from more than 19,000 ratings (usually dispatched in a few days). A firm, patented contoured cushion for long sitting hours. It is far pricier than the alternatives, so it suits people with persistent discomfort.
2. Everlasting Comfort memory foam seat cushion: best value
£31.49, rated 4.4 stars from nearly 98,000 ratings. A U-shaped coccyx cut-out and dependable support at a low price.
3. ComfiLife gel-enhanced coccyx cushion: best gel
£77.98, rated 4.4 stars from nearly 70,000 ratings (limited stock). A gel layer over dense foam for a cooler feel.
4. Memory foam coccyx seat cushion: best budget
£21.99, rated 4.5 stars from 183 ratings. An entry-level coccyx-cut-out cushion.
5. 5 STARS UNITED ergonomic seat cushion: best for tailbone comfort
£29.95, rated 4.4 stars from nearly 35,000 ratings. Memory foam comfort for the tailbone with a strong track record.
Setup
Position the cushion at the junction of the seat and backrest, with any cut-out aligned under your tailbone. Lower your chair by roughly the cushion’s thickness so your elbow angle stays around 90 degrees and your feet stay flat.
When to choose an alternative
Choose a lumbar cushion if back pain is your main issue, and invest in a new ergonomic chair if you have several problems at once, such as the wrong size, broken tilt or knees above hips. See our lumbar cushion guide and chair roundups.
Verdict
The Everlasting Comfort cushion is the best-value choice for most desk workers. The Cushion Lab is the pick for persistent discomfort if you can afford it, and the gel option suits warm rooms.
