DOCO Athletica Air Step-In Harness (DCA202) Hi-Density quality air mesh fabricBreathable andSUPER LIGHT WEIGHTDual Layered mesh for higher tensile strengthReflective piping thread stitchthroughout the collarfor the nighttime safetyHeavy duty D-Ring for leash andID tagDurable plastic buckle on the top for easy on and easy offTri-glide for easy size adjustment Vibrant colors are easy to see at all times! Size Chart