Fantastic product , this collar hasn't been off my Boerboel (Southall at Cariad Boerboels) for nearly a year.
It's taken all he can pull at it with ease , and with a quick wash and wax it's like new.
I would think this will last him for many years if not a life time..
I fully recommend this collar to any Boerboel or Mastiff owner, as Southall loves his collar as much as we do.