Every perk has a description of what you will receive as a reward for choosing it. In most of them, you will have to choose among the different packs. At the end of the Indiegogo we will send you an e-mail asking you what options you would like to choose for your Perks. As the campaign progresses new choices will be available. To upgrade your perk you will only have to make an extra contribution adding the difference between the two perks. Go to contribute now and add the amount without choosing any perk. Then let us know in a comment.