Combining an upper body workout with dog walking, this is the dog leash with adjustable weight dumbbells. A three-way trigger on one dumbbell lets out the 16' leash, locks it at the length you prefer, and quickly retracts the leash. Both dumbbells have four 1/2-lb. weights that screw on to the 1/2-lb. handgrips, providing customizable weight training for each arm. The dumbbells' soft urethane foam handles ensure comfort during long walks and high-repetition sets of bicep curls. A zippered nylon pouch on the other dumbbell holds a roll of 15 plastic bags (included), treats, or small toys. For dogs up to 50 lbs. Each dumbbell: 6 3/4" L x 2 1/4" Diam.