Designed for dogs that primarily use harnesses, the Lifetime Collar® is a fixed-length and slips directly over your dog’s 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.