3d vs 4d

In those cases, the 4d vs 3d massage chair comparison is a big deal, and you want the deepest, most intense massage you can get. 2D vs 3D vs 4D Massage Chair Conclusion. If you’re comparing 2d vs 3d vs 4d massage chairs, you’re mostly comparing massage strength—how deep of a massage can each chair give you. Here’s how we’d break that ...