The Tiny 1/2" Fi Series 3 Compatible Biothane Collar - Classic Buckle - Four Black Paws
BioThane® Waterproof Slip Collar - Stone Grey – Vivid Canine
Amazon.com : Educator Biothane Dog Collar, Waterproof, Odorproof, Metal Buckle and D Ring, Adjustable for Custom Fit, Cool and Comfortable, for Small, Medium, or Large Dogs, 3/4-Inch, Orange : Pet Training Collars :