This 3/8" width leash is perfect for the little guys, between 10 & 18 lbs it works great.  The leash is lightweight, the collar can be any width you want, again measure from ear to ear for a correction or all the way around the neck if you don't want corrections. 

Leash Length
Color 1
Color 2
Hardware color
Collar Size - see directions
wide flat collar? Yes or NO

Below is the medium weight leather.  It comes in the 3/8"  witdth.