Package includes: you will receive 6 boxes of silica gel desiccants, 40 gram each The canister is sealed in plastic film that should be removed before using Reusable desiccant bag: silica gel beads can be reactivated by placing them in an oven for 3 hours at 250 degrees Fahrenheit Note that if you receive silica beads that are already green, it might be absorb moisture during transit or during warehousing Proper size: silica gel dehumidifier measures approx. 4.13 x 2.17 x 0.59 inches or 10.5 x 5.5 x 1.5 cm in dimension, and appropriate size makes it easier for you to use and store, not take up much space Portable tin canister: indicating silica gel dehumidifiers are tightly encased in a compact tin canister, which is equipped with vents and a hole for easy inspection The canister is made of aluminum, which will be sturdy and can serve you for a long time Protect your items: silica gel desiccant provides moisture protection for cameras, telescope cases, tool boxes, silver drawers, computer cases and general small enclosed spaces Each silica gel bead canister absorbs moisture and protects up to 3 cubic feet of enclosed space, which is suitable for using in humid environments and humid seasons Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.