This velcros at the neck and girth area. They are custom made just for you. Please provide the measurements SIZING FOR HARNESS VEST & DRESSES XSMALL NECK 6 1/2-8 GIRTH 10”-12” LENGTH 8 SMALL NECK 8- 10 GIRTH 12”-14” LENGTH 9 MED NECK 10-11 GIRTH 14”-16” LENGTH 11 IMPORTANT