2D Rollers: 2D massage chair rollers move up and down and side to side, and even though they don’t provide a whole lot of pressure, this soothing type of massage might be just what your body needs.
3D Rollers: A 3D massage chai uses rollers that go up and down and side to side plus move in and out to provide deep tissue therapy for those who like a stronger massage experience.
4D Rollers: 4D rollers are almost identical to 3D but they feel smoother with more fluid movements. 4D rollers are capable of more variant motions for the most human-like feel.
S-Track Roller System: An S-Track roller system follows the curvature of the spine by moving up and down a roller track that begins at your neck and continues all the way down to the base of your spine.
L-Track Roller System: An L-Track roller system not only follows the curvature of your spine, but continues beyond to wrap underneath to your glutes and hamstrings on an L-Shaped track.
Dual Track/Split Track: The latest technology in massage chairs is the Dual-Track with the integration of an L-track merged together with an S-Track. Dual tracks have superior stretch capabilities and the best overall coverage.