The strap on the size large step in dog harness is 1 inch wide and adjusts from 22 inches to 33 inches. The adjustable Kwik Step Nylon Dog Harness has brass hardware. One Kwip Klip buckles at the shoulders quickly fastens this sturdy nylon harness! The flexible design features size chest and abdominal adjustments, so getting the ideal fit is easy! To get the proper size, measure dog around just behind its front legs. Available in 4 colors Red, Blue, Black and Purple.