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This device has an ideal angle for applying pressure.　However, in reality, the “just right” angle varies slightly from person to person depending on body build, neck shape, and the location of muscle tension.

For this reason, the main body incorporates an adjustable rail structure.
By sliding the rail, the angle can be adjusted so that users can fine-tune how the pressure is applied to suit their own body.

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There are two protrusions, but the design concentrates the pressure on a single point.

The second protrusion functions as a supporting pivot to provide stability.

Using the same principle as shiatsu, you can make subtle adjustments to the position and intensity of pressure simply by moving your neck slightly.