Pet Treadmill M59 Our treadmill have three size suit for dofferent pets. Pet Treadmill M59S:walking area 28x85cm,speed 1-6km/h,for pets up to 80KgsM:walking area 34x105cm,speed 1-9.9km/h,for pets up to 100KgsL:walking area 40x145cm,speed 1-9.9km/h,for pets up to 100Kgs pet training pets,pet treadmill,pet walker