Written for dogs up to 60 lbs. If you have a very aggressive dog, I would take this limitation seriously. My dog weighs 75 kilos. but not very aggressive. She barks and pulls, and I have a spring clip on the top. It doesn't really put much pressure on the leash. It usually takes about a year as the vinyl becomes brittle and peels off and given our Midwest weather I find that tolerable.
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