For everyday use, I stick with a 1.5-inch Biothane working collar with a solid brass buckle and D-ring. It’s low-maintenance, doesn’t absorb smell or water, and cleans up in seconds after training or a muddy hike.
I like gear that can handle rain, mud, and rough play without needing babying. Biothane’s got that perfect mix of leather feel with working-dog toughness.
For training, I’ll sometimes swap to a Herm Sprenger prong or slip tab collar depending on what we’re working on, but day-to-day, simple, strong Biothane all the way.