I know someone was looking for them.
http://www.collars-4-dogs.com/waterproof/synthetic-dog-collars.html
ETA- Found another one:
http://olivegreendog.com/dog-collars/stunt-puppy-biothane-waterproof-collar-in-orange-1/
http://www.collars-4-dogs.com/waterproof/synthetic-dog-collars.html
ETA- Found another one:
http://olivegreendog.com/dog-collars/stunt-puppy-biothane-waterproof-collar-in-orange-1/