A martingale style collar for the tender pups out there! Built with cushy spacer mesh and lined with our beloved Stretch Fleece, this is our softest collar to date. The martingale loop prevents any wily hounds from slipping out of their collar and further distributes pressure around the collar instead of just the front. Black aluminum D rings are weightless and the reflective piping keep you visible. What more does thin-skinned dog need? XSmall - 9 - 11" Small - 12-14" Medium - 14.5 - 18" Large - 18.5 - 22"