Varigrip is made to develop & maintain the strength and dexterity of your fingers and hands. Varigrip's ergonomic design and variable tension provides customized conditioning for individual fingers, the entire hand, wrist, and forearm.

The reversible molded grip uncovers simulated strings to develop and maintain finger calluses when you are away from your instrument. Planet Waves Varigrip: the ultimate conditioning tool for musicians.

• Molded finger pads for added comfort
• Adjustable Tension settings
• Reversible molded comfort grip
• Simulated Strings for building & maintaining calluses

D'Addario Hygrometer Humidity & Temperature Sensor will provide key information to help maintain the proper humidity and temperature conditions for your stringed instrument.

• The Humidity & Temperature Sensor is a precision-designed hygrometer that digitally indicates accurate relative humidity levels ranging from low (under 20%) to 99%.
• Temperature is displayed in both Farenheit or Centigrade ranging from 32F to 122F.
• The design includes a programmable set point that can set the minimum humidity desired.
• When humidity is below the set point, an icon (water drop) will indicate it is necessary to use a humidifier.
• The high and low memory can also indicate the highest and lowest temperature & humidity conditions your instrument has been exposed to since the last reset.