The hybrid collar is an industry-first product that provides the even pressure distribution of a flat collar with the no-tangle benefits of a rolled collar - and you'd be hard pressed to find a collar thicker than this one. Precise stitching adorns these weather-resistant leather collars and their matching leashes. The 3/4" wide collar ends taper into a 1/2" wide center, and the 1" wide collar ends taper into a 3/4" wide center. These collars are approximately 3/8" thick in the center. Aluminum-finished hardware stands up to rugged use.