The 75% humidity packs are refills for the Tone Protector Cap and Tray. 75% is ideal for more humid climates. Store unused packs in the resealable package that it comes in.  

Features of the 2-Way Humidity Packs:

• One humidity pack 75% 8g pack

• 2-way humidity control

• Non-toxic

• No mess

• Individual pack dimensions: 2.75" x 2.75"