Backing options: Iron-on, Sew-on or Hook side (velcro type fastening). Compatible with the following Julius K9 harness sizes and models: Extra Small - Baby 1 IDC Powerharness; Small: IDC Dog Harness: Mini-mini, Mini, size 0; IDC Belt Harness: Mini-mini, Mini, size 0; Power Harness: Mini-mini, Mini, size 0; Large: IDC Dog Harness: 1 to 4; IDC Belt Harness: 1 to 3; Power Harness: 1 to 3.
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