Adjustable Double D Ring Reflective Nylon Pet Collar Belt for Medium Large Dog. Specifications: The metal traction buckle has a smooth surface, and it is strong and durable. D ring has strong tensile strength and is convenient for pets to wear daily. The reflective pet collar has the effect of light reflection and refraction to prevent accidents in the dark place. It can be adjusted according to the pet's neck circumference, which is simple and convenient to use. Item Name: Pet Collar Material: Nylon, Reflective Fiber, Metal Features: Adjustable, Double D Ring, Reflective Size: Width: 2.8cm/1.10", Telescopic Length: 43cm - 60cm/16.93" - 24.80" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Pet Collar