Silica gel pouches are used to keep objects dry and shield them from moisture. They are added to new products by brands, especially shoes and handbags, to protect them against moisture and humidity during storage and transportation. An expert at aquablue is a silica gel provider in the world, states: "Silica gel is known scientifically as silicon dioxide. Silica gel comes in two primary varieties: self-indicating and non-indicating. Just about of its own weight will be absorbed by non-indicating gel, which will adsorb water on its surface instead of absorbing it. When wet, self-indicating gel changes color to show that it is effective even though it will adsorb slightly less.