ScientistPet Bling Rhinestone Leather Dog Collar Quality titanium fasteners, durable, never rust Ultra-soft leather, very comfortable to wear dog Optional matching leash A heart-shaped rhinestone pendant complete the look Please kindly check the neck size of your pet and choose the right size! Size: S, M, L. S: width - 1cm / length - 30cm / adjustable length - 21-27cm M: width - 1cm / length - 37cm / adjustable length - 25-33cm L: width - 1.7cm / length - 42cm / adjustable length - 29-39cm