Red Dingo Classic Dog Collar - Purple. These collars are made from high density fray proof tough woven nylon again for durability and reduced wear and tear. The bucklebone is engineered in acetal plastic and really adds that designer detail. They're made from high density fray proof tough woven nylon again for durability and reduced wear and tear.These Red Dingo designs have an authentic Australian street and surf style. Small 12mm x 20-32cm (8"-13") Medium 18mm x 30-45cm (12"-18") Large 25mm x 40-60cm (16"-24")