The ErgoWave combines 60 years of experience with all the features patients and doctors told us were important. All areas of the patients spine are covered with true intersegmental traction every 13 seconds, while the ErgoWave roller pattern travels up the spine like a wave of soothing relief. A high-quality motor allows for almost silent operation, and a gas spring makes roller height adjustment quick and easy. Extremey durable, the ErgoWave has welded steel frame to ensure stability, while its low-maintenance design eliminates service points with no routine maintenance required! Features Unique wave action with counter-clockwise roller rotation.