These type of harnesses are available for cats for walking or taking road trips
 
It has 1/2 inch nylon straps with plastic snaps on neck and chest with fabric along the back
 
One Size fits all
Neck 9 - 15 inches adjustable
Chest 15 - 20 inches adjustable
Full harness fabric is 8 inches long
 
Names and phone numbers can be added to them in the middle of the vest, all done in heat pressed vinyl.
 
Can do a custom order by sending measurements for a for sure size.
 
Neck
Chest (Right behind front legs)
And Length (From base of neck to middle of back)
 
Please visit the FABRIC PAGE for  pattern options (COTTON SELECTION at the bottom) >> https://www.craftdoghandmadepetsupplies.com/fabric