If you gain or lose more weight than your harness can adjust for, send us your new measurements and we’ll send you a new back so you can continue to use your original harness. You can also buy a separate back so you can share with someone else. If you have gained or lost a significant amount of weight (100lbs or more) you will most likely need to buy a new harness altogether.
 
Please see measurement instructions on the Original Harness page.