Material: Nylon Ribbon + 3M Reflective + AluminumAlloy + Sandwich Mesh Size: 2XS: 28-30cm XS: 30-35cm S: 35-40cm M: 40-45cm L: 45-50cm XL: 50-55cm 2XL: 55-60cm 3XL: 60-65cm Sizes can be selected according to theinstructions in the size table Tips: A correct measurement benefits forchoosing the right size for your love pet Feature: ‒The pet collar belt is made of high-densitynylon ribbon, and the integrated design prevents the tension from directlyacting on the connecting buckle. ‒The utility of the coil is improved, whichis convenient, durable and comfortable to wear. ‒The sandwich mesh is soft, breathable andcomfortable. ‒Woven with 3M reflective material, increasethe visibility of amblyopia environment and improve the safety of nightwalking. ‒Unlike traditional coil designs, thewidening of the bend does not harm the neck. Widened and thickened with a softmaterial, it is not easy to pull the dog's neck when you walk the dog, it issafe and comfortable.