We lare big fans of the Alpinhound Pet Co., and the wonderful customer service that Greg has provided us. This is our second collar purchase with him, and we love the range of designs and options he's created: not only does he offer new materials like BioThane and Cordura that other manufacturers don't, but Greg also selects the most interesting buckles as well, resulting in really cool looks for your pet. The collar we just purchased is made of BioThane, a nylon that has the feel of rubber or matt leather, and the buckle is beautiful and so easy to take on an off. We could not be more pleased with our purchases and our interactions with Greg. Thanks!!!