This thing is amazing, it takes a little time to adjust and get your dog use to it but the results are incredible. I was a little concerned by the thin straps because I have a 130lb Rottweiler who is rambunctious though friendly. After acuople of days working with treats and a little patience I was able to get him to wear it and the difference while walking is night and day. He doesn't even try to pull away any more no tension on his leash and he enjoys walking as much as ever. He is less distracted by other dogs too which really surprised me. Can't say enough about this collar it has made our lives easy.