keep the water hot inside. longer. it's like insulating. >> his creations have always become source of income. he sells them to other inmates and transfers money to his own account allowing him to buy food and other items in the commissary. >> charge $3. $1 for this, $1 for this and $1 for the top, and for this bag right here, they call it the shower bag, i charge $3, for the whole thing. >> more important than turning a profit, he says his weaving gives him time to think about the mistakes that landed him in jail. he's serving a one-year sentence for auto theft and possession of a controlled substance. >> i came here to the united states 2000. i married my wife and she brought me over here. and because of drugs and now we're separated.