LotFancy Silica Gel Packets, 300 Packs 0.5 Gram, Indicating Desiccant Dehumidifier Packets

The orange beads change color to blackish green when they become saturated with moisture.
Absorb moisture without any chemical reactions.
Silica Gel Beads: 2-4 mm(90% transparent beads + 10% orange beads).
No change in size or shape even if the silica beads become saturated with moisture. 
 No change in size or shape even the desiccant beads become saturated, feels and looks dry, keep everything dry and safe.
Each packet is self-sealed, strong, and tear-resistant.