Features:

1. Prevents dog from slipping out of the collar
2. Tightens when dog pulls for better control and loosens when dog stops pulling
3. Safer & more comfortable than a choke chain that's always tight
4. Secure fit prevents dogs from escaping or backing out of collar
5. Perfect for “escape artists” and breeds with necks larger than their heads
6. Custom fit is perfect for growing puppies
7. Doesn't cause matting & bald spots like some standard collars
8. Not recommended for tie-out use or during group play sessions
9. Made of nylon