I sell the Jaraden.. and other brands .. I just looked up the size for the standard bag
15' w x 8" h x 8" d
here is a link to a thread of one that I have listed here on yt for you to see the size, if you scroll down you can see pictures of my Remy who is 51/4lbs to get an idea of how she fit into that size.
There are bigger bags for two pups
http://www.yorkietalk.com/forums/yor...t-carrier.html
I hope that info helps.. I will say there are others who sell kb on this site too.
Shinja