Small-Medium Breed TreadMill. GoPet TreadMills have dolly wheels which provide easy mobility of the TreadMill. They also have a metal eyelet which allows for a toy to be attached, if needed. TreadMills have push button controls which provide gradual increase and decrease in speed. Max Weight-132 lbs Running Area-52L x 16W Speed Range-1 - 8 MPH Features-Gradual Start, Remote Control, Incline Adjust, Upright Fold.Gradual Start easy for dogs to adjust to using. Remote Control-easy too use. Lowest step on height in the industry. Small size great for apartment living. Folds up to store 0.6mph to 7.4mph. The length of the dog is more important to buying the proper treadmill than a dogs weight. Make sure the running surface is at least 1/3 longer than the dog for the dog to achieve full range of motion. Tread area 52"lx16"w. Max Weight 132 lbs Running Area 52″L x 16″W Speed Range 1 – 8 MPH Unit Weight 100 lbs Unit Total Dimensions 70″L x 25″W x 11″H Features Gradual Start, Remote Control, Incline Adjust, Upright Fold Shipping Dimensions 77″L x 26″W x 17″H – 145 lbs – On Pallet Warranty 1 Year Manufacturer Warranty