Boveda Humidification System for Violin or Viola

These are the new gold standard in humidification for professional musicians. The two-way control keeps my violins at about 40% humidity from climate to climate as I tour. They are so effective and safe for the instrument as well. I can vouch from experience that these make it possible to travel from Miami to Calgary in one week and maintain instrument performance. This technology is groundbreaking - every musician on our broadway tour uses them.