The 3-in-1 Wedge™ by Fullmove is an adjustable ergonomic seat wedge designed to improve posture, reduce spinal load, and allow comfortable sitting in office chairs and at home.
Why seat angle matters
Your sitting position makes a big difference.
Most chairs keep your hips at a 90° angle. This position rotates the pelvis backward, flattens the lumbar curve, and increases passive loading on the spine.
Over time this slumped posture contributes to back pain, muscle fatigue, and discomfort — especially in prolonged sitting.
A forward-tilted seat wedge improves pelvic alignment so your spine can stay naturally upright.
Clinical trials have found that seat wedges angled between 8° and 13° as the most effective range for reducing back pain.
Our own trials have shown that when back pain is not present a 5° angle improves sitting posture.
The 3-in-1 Wedge by Fullmove uses high-density foam like that in premium seating (not soft memory foam that flattens) to support your weight and maintain a consistent wedge angle.
Features include: