Red Dingo Dog Collar Medium 12 - 18" x 0,7" (30-45 cm), Red Dingo Dog collar Sizes: Small : 8 - 13" x 0,5" (20-32 cm) Medium : 12 - 18" x 0,7" (30-45 cm) Large : 16 - 24" x 1,0" (40-60 cm) Webbing - Premium nylon webbing, woven from quality fine yarn for a softer feel. Densely woven edges for maximum abrasion resistance. Exceeds ISO standards for washing and UV colour fastness. D-Rings - Fully welded from solid stainless steel. D-rings will not rust and therefore will not discolour pet's fur. Bucklebone - An original Red Dingo trademark and registered design. 'Bucklebones' are designed not only to look good, but to be amongst the strongest side release buckles used in the pet industry.