The Halti Optifit Halter has been designed to provide your dog with maximum comfort while walking. Its padded noseband and reflective cheek straps ensure increased visibility in low light conditions and are comfortable to wear. Unlike traditional halters, the Halti Optifit features an adjustable noseband and side straps to perfectly fit a variety of nose shapes. However, it is not suitable for dogs with flat faces. Treat yourself to absolute peace of mind with the Halti Optifit Halter. It is equipped with a sturdy safety clip that attaches to your dog's collar during walks, ensuring complete control and safety. Combine the Halti Optifit Halter with the Halti Training Lead for even more effective walks and a no-pull training experience. This double-clip lead can be attached to both the Optifit Halter and your dog's walking collar, providing you with better control and simplifying training. A: Neck circumference B: Muzzle circumference.