Boveda | One-Step Calibration Kit 75 | Box of 12

The Boveda One-Step Calibration Kit 75 is a simple and surefire method to accurately calibrate any humidifying device to a perfect 75% humidity.To operate, simply place inside the bag, close the zipper, and wait 24 hours, and then “Viola”, your humidor will have a perfect 75% humidity level. It doesn’t get any easier than this! Included is a box of 12 for months of fresh, reliable, and hassle-free cigar storage.