Fully adjustable walking harness with durable straps of nylon webbing with duck canvas weave,Webbing has reflective triple needle stitch for low-light visibility,Chest and back pads are 500D nylon canvas with water-repellent coating bonded to the neoprene cushion for comfort,Edge binding on pads to prevent fraying and abrasion,Custom durable slotted metal D-ring for top lead and front lead, heavy duty plastic side release buckle This rugged on-leash training harness is built with two attachment points: one on the back for day-to-day walks, and one on the chest for increased control that helps you work against pulling. It’s built with comfy cushioning, our durable duck fabric, and reflective stitching for safety in low-light situations. Si Medium: 22"-32"