CHOKE FREE REFLECTIVE STEP IN ULTRA HARNESS RED ALL SIZES AMERICAN RIVER Soft Mesh Polyester / Machine Wash and Line Dry Double Safety Closure- Velcro and High Strength Plastic Side Release Buckle Zig Zag Trim Binding Stitch - Prevents Missed Stitches and creates a Super Strong BOND Same Color trim binding as the mesh Trachea Safe - Choke Free Patented Design Pulls from the Chest ONLY Double D-Ring Adds Strength Wrap Up and Go Design. Simple Step in. SIZE XX-SMALL (Chest 9-11) IMPORTANT: Measure the CHEST only, just behind the front legs. If your dog is on the borderline between sizes, always GO DOWN to the lower size, not up. The harness needs to fit snugly to work correctly. See images or description for sizing chart Safe Night Walking Reflective strips. Patented Conforming Shape Fit Seam Technology - Causes harness to conform to Dogs Chest curve.