BOB AND BRAD have built a reputation for practical, feature-packed recovery gear. The iMaster Pro 4D massage chair takes their approach into the premium space, focusing on one core problem: how to actually relieve deep spinal pressure without the chair fighting your body shape.

The 4D rollers adjust pressure and speed based on your body’s contours in real time. That means the chair doesn’t just follow a preset path—it reads your back and responds accordingly. The 166-degree zero gravity position tilts your knees above your heart, reducing spinal load by up to 25%. Combined with the 51.4-inch SL-track, the rollers reach from your neck down past your glutes, covering the areas most desk workers and athletes need addressed. The lumbar heat is subtle but consistent, warming the lower back without feeling like a heating pad on high.

At roughly 38 inches wide and 45 inches deep, it requires dedicated floor space. The black finish is understated, so it doesn’t scream “medical device” in your living room. It handles users up to about 6’4” comfortably, though shorter users may find the footrest position slightly high. For anyone logging long hours at a desk or recovering from intense training, this chair delivers targeted relief without gimmicks.