Martingale Collars with Chain Loops
Martingale Dog Collars with a chain loop (also known as 1/2-checks or half-checks) offer the safety of a martingale collar and the sound needed to get your dogs attention for voice command training. The action of the chain in a half-check collar is smoother and quicker, thus making leash training easier. It is also a good collar for large & bully breeds, and wears much longer with dogs that constantly pull when on leash.