Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Martingale Collar

So far, the collar holds up to my very active pitbull. The chain does not rust ( a problem I've had in the past with other collars ) and the fabric stays looking nice and new. The only reason I didn't give this five stars is because I wish it had a d ring so I could put my pups id tag on it. All in all very satisfied.