Our Private Trainers hold individual 2.3mm prongs to give you security, safety, and control when walking your dog.  Available with an optional Weinerlock quick-release buckle to make attaching the collar easier.  Prongs may be removed as the dog's training progresses and the collar can then be used as an everyday martingale style collar.  Click here for instructions on inserting and removing prongs.  Our Everyday Trainers are unlined, while the Elite and Luxe Crystal collars are lined with garment grade leather.