One of best
Both my wife and I use this for sciatica and low back pain.  We looked at several on Amazon and this seemed to be one of the two best.  We are very pleased with our choice and recommend the product highly,  [ASIN:B017AD9XEI Motion Trend Seat Cushion - Orthopedic Coccyx Comfort Bamboo Memory Foam (Gray)]]
Rating: 5 stars