http://www.fishpondusa.com/tundra-tech-pack.cfm
Pricey be well worth it!! If you don't need that kind of volume, there is a smaller one as you mentioned.
Super comfy and practicle. the only thing I don;t like is the buckles they use a bit of a pain in the As$...
I ordered my through Fishtales, but TFO is the Canadian distributor so they may have them in stock at their Calgary distribution centre.
P