Lifetime CollarDesigned for dogs that primarily use harnesses, the Lifetime Collar is a fixed length and slips directly over your dogs head. Built with the same dry treated climbing rope as our Lifetime Leash that's made to withstand the harshest environments. Held together with custom designed clamps that allow for it to be repaired, and finished off with a rust free o ring. As our relationship with dogs evolves, so can the gear we use.