Efficient Moisture Absorption: The moisture absorber boxes with 500ml capacity use spherical calcium chloride beads and moisture-locking paper, effectively absorbing moisture and locking it in without leakage, keeping your space dry for a long time. Visible Moisture Absorption: These humidity absorber boxes absorb excess moisture from the air and store it in the transparent storage area, allowing you to easily monitor moisture absorption at any time. Physical Dehumidification: Made with high-quality calcium chloride and moisture-locking paper, these humidity moisture absorbers capture and gather moisture from the air through their porous structure. No added fragrances ensure a safer and more reliable experience. Convenient to Use: Simply open the plastic lid, tear off the foil, and close the lid before placing the dehumidifier boxes anywhere you need them. Quick and easy to use