Petmate K9 Control redefines the functionality of retractable leashes allowing for more control and safety. K9 Control is the only retractable leash that retracts in the lock or stop position. This enables pet parents to safely pull back their dogs without the worry of excess slack or tangling, mitigating having to grab the tape/belt, and allows the user to more confidently retract their pet with control. This functionality is made possible with the patented Zero Slack Technology, available in four sizes: XSmall - Up to 22 lbs. Small - Up to 50 lbs. Medium - Up to 90 lbs. Large - Up to 120 lbs. 1 year limited warranty