Product Name: Dog Collar_x000D_ Product material: Nylon + Polyester_x000D_ Product size:_x000D_ Size Width(cm) Lengt(cm) _x000D_ S 2 35-40 _x000D_ M 2.5 42-47 _x000D_ L 2.5 47-54 _x000D_ Kindly remind:If you need harness or rope(same design) for your pets,pls view in our store._x000D_ _x000D_ Features: Breathable Reflective_x000D_ 1.Durable high quality magic patch_x000D_ It is still very sticky after repeated pulling for 10,000 times. It is also very convenient to adjust at the same time._x000D_ 2.Breathable sandwich mesh_x000D_ The beautiful and lightweight breathable mesh cloth can ensure the breathability and comfort, while also buffering the pressure and reducing the body damage to the dog._x000D_ 3.Thickened safety buckle_x000D_ Buckle made from the standard of rock climbing equipment, resistant to friction, strong and durable_x000D_ 4.Classic design D ring_x000D_ Using the welding technology to increase the hardness of the D ring by 3 times_x000D_ _x000D_ Tips:_x000D_ 1.Please allow 1 cm error due to manual measurement.Please make sure you do not mind before you ordered.