Silica gel is a granular, vitreous, porous form of silicon dioxide made synthetically from sodium silicate. Silica gel contains a nano-porous silica microstructure suspended inside a liquid. Most applications of silica gel require it to be dried, in which case it is called silica xerogel. Material: Highly absorbent, recyclable pure white silica gel packs for moisture protection. Use: Safeguard Collectables, Jewelry, Documents, Clothes, Electronics, and more. Optimal Humidity Control: Maintain ideal humidity levels, preventing mould and damage. DMF Free Desiccant: Ensures high capacity, thermal stability, and eco-friendly protection for your valuables.