VERY Nice collar! Strong and durable. Tension on Seatbelt buckle is very strong. My wife can't press it down hard enough to take it off the dog. We have this on an 80 lb. American Staffordshire Terrier and he hasn't destroyed it yet. While we don't hook their leashes to their collars I have had to grab the collar a few times to hold him back and had no fear that the collar would break or the buckle would let go. I didn't buy directly from the company (purchased from local pet store) so I can't comment on anything other than the collar itself but i'd guess if they are half the quality of this collar then they are probably a pretty good company.