Doughnut cushions—also called ring pillows or tailbone pillows—are firm, U-shaped pads that relieve pressure on the coccyx and lower back while sitting. This DIY version uses high-density foam and a simple fabric cover, giving you the same support as store-bought cushions at a fraction of the cost. It works because the open center removes pressure from the tailbone, while the surrounding foam supports your sit bones.
Ingredients
- 2-inch (5 cm) high-density foam sheet, 18 × 18 inches (45 × 45 cm) — or a 16-inch (40 cm) round foam cushion
- 1 yard (0.9 m) of cotton fabric (or ½ yard if using a pre-cut round)
- 1 zipper, 12 inches (30 cm) long
- Thread to match fabric
- Scissors or rotary cutter
- Marker or pen
- Straight pins
- Sewing machine (or needle and thread for hand sewing)
Instructions
- Cut the foam: Using a marker, draw a 16-inch (40 cm) circle on the foam. Mark a 6-inch (15 cm) circle in the center. Cut out the outer circle, then cut out the inner circle to create a ring. If using a pre-cut round, simply cut the center hole.
- Cut the fabric: Fold the fabric in half, right sides together. Place the foam ring on top and trace around it, adding a 1-inch (2.5 cm) seam allowance. Cut out two fabric circles.
- Install the zipper (optional but recommended): On one fabric circle, mark a straight line across the center. Place the zipper face down along that line, pin, and sew the zipper in place, opening the seam. This will be the back of the cover.
- Sew the cover: Place the two fabric circles right sides together. Pin around the edge, leaving a 1-inch (2.5 cm) opening if you didn’t install a zipper. Sew around the entire edge with a ½-inch (1.25 cm) seam allowance.
- Turn and insert: Turn the cover right side out through the opening or zipper. Slide the foam ring inside, pushing it gently into the corners. If using a zipper, close it. If using an opening, hand-stitch it closed.
- Finish: Smooth the fabric and ensure the foam lies flat. Your doughnut cushion is ready to use.
Tips
- Foam density: Use medium-density foam (around 1.5–2 lb/ft³) for a balance of support and comfort. Memory foam works too but may feel softer and less supportive for some.
- Fabric choice: Choose a durable, washable fabric like cotton or linen. Avoid slippery fabrics like silk, which can cause the cushion to slide on chairs.
- Measurement check: Measure your chair seat before cutting. A 16-inch (40 cm) cushion fits most office chairs, but if your seat is smaller, reduce the outer diameter to 14 inches (35 cm).
- Common mistake: Cutting the center hole too small. If the hole is less than 5 inches (12.5 cm), it won’t relieve tailbone pressure effectively. Always measure twice before cutting.
Serving Suggestions
Use your doughnut cushion on any hard chair—office chairs, car seats, dining chairs, or wheelchairs. It’s particularly helpful during long periods of sitting, such as at a desk, during long drives, or while recovering from minor tailbone discomfort. Pair it with a lumbar roll for additional lower-back support.
Variations
- Cooling gel layer: Add a thin layer of cooling gel foam on top of the main foam for a cooler sitting surface, especially in warm climates.
- Waterproof cover: Use a waterproof fabric (like PUL) for the inner cover to protect the foam from spills, then add a removable outer cover for washing.
- Inflatable version: Instead of foam, use an inflatable ring (like a swim ring) and wrap it in fabric. This makes the cushion portable and adjustable in firmness.
- Non-slip bottom: Sew a piece of non-slip shelf liner to the bottom of the cover to prevent the cushion from sliding on smooth chairs.
Storage and Reheating
Store the cushion in a dry, cool place away from direct sunlight, which can degrade foam. If the cover is removable, wash it in cold water on a gentle cycle and air dry. The foam itself should not be machine washed; spot clean with a damp cloth and mild soap. With proper care, the cushion will last for years. If you use the cushion daily, consider replacing the foam every 2–3 years as it compresses.
Frequently Asked Questions
Can I use a regular pillow instead of foam? No, a regular pillow is too soft and will not provide the firm support needed. High-density foam is essential for proper pressure relief.
How do I clean the foam? Spot clean with a damp cloth and a small amount of mild detergent. Do not submerge the foam in water, as it can break down.
Can I make this without a sewing machine? Yes, you can hand-sew the cover using a simple running stitch, but it will take longer and may not be as durable. Alternatively, use fabric glue or iron-on hem tape for a no-sew version.
What if the cushion is too firm? You can soften it by using a thinner foam (1.5 inches/4 cm) or by cutting small slits in the foam to reduce density. However, too soft may defeat the purpose.
Is this cushion suitable for pregnant women? Yes, many pregnant women find doughnut cushions helpful for sitting comfort, but always consult a healthcare provider for specific medical advice.
Can I use this on a car seat? Yes, but ensure the cushion doesn’t interfere with seat belt positioning. Place it securely and avoid using it while driving if it shifts.
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