I’ve had a search around the site for someone mentioning what size alice frame you use with the pack. I’ve seen medium one’s on ebay. Is this the correct size or is there a large size frame?
I believe all the frames are the same size..it’s the backpack that they’re used with that is the different sizes if I remember correctly.
EDIT: GBprops confirms my suspicions. http://www.gbprops.com/wiki/alice-pack-frame/
-Zack
Yay I finally know something 
Zack is correct, The alice pack frame is one size fits all. The pack it self can be medium or large. If I remember correctly the large has 3 extra pockets above the big 3.
Anyway everything you want to know about Alice packs. It shows the differences between the large and medium
Ah, Thanks alot guys. I can now move to step one of my first proton pack attempt.
I’ve just purchased one and just want to check what the height should be as I want to know if I’ve got the smaller Rothco one or a genuine one. Does anyone know how tall it should be?