Amazon.com : HALTI Headcollar - to Stop Your Dog Pulling on The Leash. Adjustable, Reflective and Lightweight, with Padded Nose Band. Dog Training Anti-Pull Collar for Large Dogs (Size 4, Red) :
Dog Training: Pros and Cons of Using a Dog Halti - PetHelpful
Perko, Roger injured in training run, will miss downhill event