Series 3/3+ Fi Collar UPGRADE / ADD ON ONLY colorado Two carabiner add on for

Two carabiner add on for summit leash only

Loop - 4" when clipped/ 8" when opened

The Fi add on reduces adjustability by 2" from the listed measurements on any collar

Please see size chart in second image for size-to-weight recommendations

Whether they're yours or your bestie's we've got you covered with our Surprise Starter Box

Series 3/3+ Fi Collar UPGRADE / ADD ON ONLY colorado Two carabiner add on forThis is NOT a collar, you must add a collar to your cart and then add this to make your collar Fi Compatible. You must select in line or layered from the drop down. If you have a strong puller, we recommend the layer option. If you're purchasing more than one collar, please leave in the notes which collar gets the Fi Add On(s). Any 1. 5" Quick Release must be layered. For full performance functionality of the new Series 3+ Fi Devices, we recommend in