First I gotta say "I ain't afraid of no ghosts" but seriously,Shea we all have a little differences in our packs because, we each build our own. But the one thing that seems to be the same is the old milk jug/sport drink caps. My only notice is that yours look "thick" I'll call it on the cover. Plus side note: I believe Egon built all the GB packs. Doe,Ray,Me,Egon!!!