I discovered a company near Phoenix, AZ which exists solely for the purpose of making money to aide in greyhound adoption!
I found that they make a very special type of leash, and also offer many different fabrics for collars.
I recently ordered this set of collars and leash for Fleur.
The leash is special due to the fact that the loop for one's hand is completely adjustable, and thus leaves one's hand and arms free to be comfortably in use.
Sorry that the photos don't show the leash and collar better, but Fleur wasn't interested in modelling!