@mauigirl:
Okay I actually went and found the e-mail I sent in to order the collar. The collars are from Northwind Catalog. Their medium collar is adjustable from 10" to 16"
On the first collar I ordered I requested that it be 3" smaller than the medium size (Zip, girl), and the second I ordered I asked it to be 2" smaller (Riley, boy, bigger). In hindsight the medium as is would have been fine. On both of our dogs the collars are adjusted to just about as big as they can go so 13" on Zip and 14" on Riley (his is snugger going over his head but still loose around his neck). And the allowance looks to be 3" (that extra loop in a martingale that make it instantaneously adjustable)
Sorry that took me so long, I ended up staying at work til 1am that night!
Thank you very, very much !!
It's past midnight now so I'll check it in the morning.
Greetz
UPDATE : Yes, they are the right size !:D