Ding ding ding we have a wiener!!
Her Royal Highness, the Duchess of Wagoner 1993-2012.
Happiness is a warm puppy ~ Charles M. Schultz
Named Savannah Jane ~ Rae Wagoner
I think it's a fabulous idea all around.
As for the legal issue, put in a disclaimer with the product & on whatever webpage/site for ordering telling people with no common sense (bless their hearts) that the product is meant to increase visibility, but is not a substitute for a leash or for carefully watching their critter
Tex, loyal servant to...
-----Julie----&------Jax------