Built-In Digital Hygrometer
Read relative humidity at a glance and target the ideal 58-62% RH range with confidence.
Passive One-Way Valve
Vents excess CO₂ and moisture automatically across a larger batch, no manual burping needed.
Scaled Headspace
Fill to 75-80% capacity so a heavier batch still has the gas expansion room the valve needs.
Heavy-Duty Ziplock
Holds an airtight seal on a larger batch through frequent hygrometer checks.
Clear Product Window
Pair the visual check with the hygrometer reading for a complete picture of the cure.