Our 1.5" Fi-Compatible* Biothane Martingale collars are made with buttery-smooth biothane in the color of your choosing. You have the ability to choose up to 3 different colors to use for the main section, adjustable + accent sections, as well as the fi-loop color.
These collars cinch circumferentially as your dog creates tension; Upon the release of tension, the collar goes back into its relaxed state.
*Please note, the GPS tracker must be purchased separately from Fi Dogs and will not be included. Save $50 on your tracker by using our link below, or using the code "Beau50" at Fi's checkout. https://p.tryfi.com/beau50?