The main difference between the two collars is the half-choke design which rests comfortably around the dog’s neck but allows for measured control when tension is applied during training sessions or just out on the trail. It is a collar made for more obedient adult dogs and used as a training tool. If the collar is the right size and properly adjusted, the collar will tighten to the size of the dog's neck without actually choking them. For younger dogs and puppies, we recommend collars with a tough, quick-snap buckle to prevent the collar from slipping off e.g., our Casual Collar ECO. Both collars are made with a woven, 100% recycled polyester strap that is lightweight and strong, and both feature waterproof neoprene padding for added comfort and support.