Mini Super Dri Aid by Hal-Hen;

Keep your hearing aids working their best - use this easily portable hearing aid dehumidifier. This must-have item removes all damaging moisture from all in-the-ear and canal type hearing aids. Portable - easy to take with you when traveling. Use every night for best results. Just open the jar and put your hearing aid on the foam padding that covers the super absorbent pellets. In the morning your hearing aid will be ready to go. The moisture-drawing pellets can be reactivated and reused. Blue pellets are mixed in with the white pellets. The blue pellets turn white when they can no longer draw moisture and is a sign that you should reactivate them. Reactivation is easy. Following the directions on the package, your convex or microwave oven is all you need to freshen your Dri-Aid Product dimensions (imperial): 2 inch H x 2 inch L x 2 inch W Product dimensions (metric): 50.80 mm H x 50.80 mm L x 50.80 mm W