Material Safety: The pressure plate surface features, breathable material, while the interior is filled with a high-resistance sponge for support without skin damage. Versatile: Ideal for bone regulation and pain relief, this portable board is suitable for family massage applications, with a flat padded surface designed for feet, shoulders, and wrists. Operation Method: Lift the handle to activate the speed control board. Adjust the pressure intensity using the knob, and easily operate the pressure plate for effective correction. Chiropractic Compression Board: This portable board allows targeted pressure application on specific bones in the foot or wrist from angle, enabling joint movement without harming surrounding tissues. Portable Design: This extremity drop and acceleration board offers an efficient alternative to large stationary units.