I have a couple of those kits...don't remember the number..maybe .5...anyway, the included sack is an Aloksak...very cool...waterproof to 200m...in case you want to take it deep sea diving
Also puncture resistant and dust proof...if the company's claims stand up. Aeromedix was billing one size as a perfect fit for the DR PSK...and now mine lives in an Aloksak. A lightweight insurance policy. I had carried my first PSK in my back pocket and eventually split the seam of the pouch it comes in, although now the new one rides in a Spec Ops pouch in a cargo pocket.

One word about zip loc type bags (in case it hasn't been mentioned). I prefer freezer bags as opposed to the standard weight. Much more durable, and packing space wise they are a titch more bulky, but the added strength is worth it IMHO. The Wal Mart brand of quart size freezer bags (the only WM bags I've used) seem to hold up as well as the name brand...maybe even better.