3” U-shaped opening provides pressure relief for the coccyx/tailbone area to help relieve lower back pain.15" x 14" x 1-1/2"-3"

• Ideal for prolonged periods of sitting
• Constructed of highly resilient polyurethane foam for maximum comfort and durability
• Machine washable, zippered cover with built-in carry handle, Navy Blue Cover.

Foam meets CAL #117 requirements