This assistive device is designed to relieve those who struggle of hand tremors that may result from Essential Tremor or Parkinson’s Disease. • Non-Intrusive • On-demand stabilization • Battery-Free • Amplitude reduction of 85-90% during a lab simulation • Premium & soft cotton for additional comfort. • The micro-adjustable BOA® Fit System enables a fast, effortless, precise tailored fit. • It comes in 3 sizes (S, M, L).