look mats
Will tell you how many mats you have.
merge mats
Will let you merge two boxes of mats into one.
separate NUMBER mats
Will let you put the specified number of mats into a box by themselves.
Mats are components required to imbue items with magical properties. To use the mats, you will need the craft magical equipment feat and points in the appropriate skill. Even characters without the necessary feat are well served to carry mats, as it is sometimes used as a currency among player characters.
There are two common ways to get mats: