Knob control adjustment: Simply lift the handle to open and turn the knob to adjust pressure intensity. Instant compression allows for adjustments. Versatile joint application: Padded surface design suitable for feet, ankles, knees,and wrists, making this board perfect for comprehensive therapy. Portable spinal correction board: This U-shaped adjustment board targets feet and wrist bones, applying adjustable pressure to mobilize joints without harming tissue. materials: Made with sturdy wood, high-density foam, and breathable leather, ensuring long-lasting, skin-friendly comfort. Smooth surface enhances durability. Effective pain relief: Provides spinal and joint correction for discomfort relief. Lightweight and portable for easy home use w/benefits.