Ultra Paws Basic Skijor Package Skijor Package contains: Medium Hip Belt, Large One Harness, 8 ft tow line Medium Hip Belt = 34-44" - One Harness is padded and adjustable. Hip Belt has patented soft quick release for safety of dog and person The belt sits on your hips - remember to take into consideration extra winter clothing. Your dog should be at least 30 pounds or larger if you want it to pull you. If you have more than one dog, consider a neckline to tie the two dogs together and dog boots for exercising on either rough or icy terrain. Remember that the Belt is meant to sit on your hips and not your waist<br> Measure the circumference of your hips<br> Consider the bulk of your outdoor clothing when determining the size that fits best<br> The Hip Belt is available in 5 sizes: X-Small, Small, Medium, Large and X-Large<br> X-Small 21-31&#034; hip circumference, Small 29-37&#034; hip circumference, Medium 34-44&#034; hip circumference, Large 40-52&#034; hip circumference, X-Large 46-65&#034; hip circumference