Review on Large Breed Martingale Collar For Dogs - Heavy Duty Anti-Escape Design Ideal For Walking, Training, And Everyday Use In Black (Large Size) by Jair Baltrusch

I have a little terrier mix who routinely slipped out of her collar, sometimes when we were near traffic. Very scary. When I couldn't find a harness that I could figure out, I got this collar, and it works really well. It seems loose but is just right since it will tighten up if she pulls at the leash. It also seems really well made. The other reason I chose it is that it has two metal rings, one for a leash and one for her tags.