Review (1/5): Worst. Brush. Ever.
Terrible design. The curve where your hand goes is literally curved the opposite way that it should be so when you grip it the brush moves away from your back rather than towards it. The bristles are too soft, too short, and there are far too few of them. The handle needs to be a bit longer and it's so thin that it flexes too easily. It's all around the absolute worst back brush I've ever used.