The Mini-Me is a hydration pack but more; this little baby could rightly be called the "Transformer." It has an expansion system that at first glance looks conventional. Start un-zipping its wrap-around zipper and you get more space for something long. But when you keep going, you realize that you've opened up a tunnel for the insertion of either our A1SS Shotgun Scabbard or our A2SS Scoped Rifle Scabbard. Slide in one of these, and you've got a rig that'll make carrying your gun as close to carrying a biathlon rifle as you can get without getting the real thing. And of course, you don't want a biathlon rifle for hunting anyway. You want to carry your choice of weapon, an included premium 3-liter (100 oz) hydration bladder, a pull-out hip belt, and a secret compartment with a deployable Bird Bag inside. All of which you get with the Mini Me. Other features include full-depth pockets for spotting scope or tripod, an organizer pocket, grapple compression strap, and more.Side Scabbards and ButtBuckets are sold separately (the pack is a terrific small-scale pack without them, for general field use). Mini-Me. It's way more than a hydration pack.