This worked great and was compatible with my training collar piece and was large enough to fit my German ShepardPerfect replacement for a Tritronics training collar. The shiny finish seems to hold up better since it moves (easier, but not *easy as it doesn’t slide around) along the training block with ease, compared to the matte material that comes with the training collar system. Cannot speak of durability yet.Bonus is it has a metal loop on the collar - some only have the square and you cannot attach a leash to.I got this for my dogs invisible fence as the cloth strap kept sliding loose. This collar is PERFECT. I had to enlarge the holes into fit my Pet safe receiver in thoI used it for my big cats and you get to size it to them and remove extraOverall you immediately feel that this collar is thinner as compared to the Dogtra collar that I was replacing. The holes are also set slightly wider apart so its a little harder to get that perfect fit. It seems fine overall, but quality wise, not as good as the Dogtra collar.Easy to put on and take off! Fits my pet safe invisible fence device perfectly!I have a PetSafe Wireless fence and the collars it come with are nylon and they were nasty and smelly and starting to fray after 2 years of rigorous use. I bought the two pack of blue and yellow to replace them and they fit the system perfectly! I’m very happy with the purchase. It was easy to cut to size and burn the end with a lighter to keep from fraying and because it’s rubber coated they won’t get smelly like the nylon ones.Very stiff but a hairdryer helps a lot. Good quality but I need a 1/2” and can’t find. This is a bit heavy for my dachshund with the vibration unitThe collar was bought to replace the one that came with a Garmin training collar. It was long enough and thin enough to bed used with the module for the training collar.The collar itself is really stiff material. I can tell my dog doesn’t really enjoy wearing that one when he goes outside. So I wonder how comfortable it is for him. The reflective stripes took no time to start wearing off, but I fell the collar May last otherwise.