Hi Amy,
Have your guy and you look over the packs on the McHale site (rather extensive selection) to see what design and features he would like. Be aware that there is some wait time and that McHale is only making about 200 packs a year at this point. Then order the video tape on his equipment (only $3.95 as I recall). As I recall these are the steps to follow:
1) Call and speak with Dan McHale regarding any questions.
2) Get the measurements as per the McHale site and send them to McHale with an order request along with the deposit include request of which pack and volume, and design, colors, material, features, etc.
3) Wait to be contacted that the demo pack is ready for shipment and pay the demo charge.
4) Test the demo pack and return when determined size and fit is comfortable and OK.
5) Give the go ahead to proceed with the pack request.
6) Pay the remainder of the pack charges when Dan sends you the request for the remaining charges via e-mail.
7) Wait for completion of the pack.
Hope this helps and good luck.
Rich