Product Color: gray or red Leash attachment points: Zinc-alloy O-ring Size XS: 11.8"-13.8" (30-35CM) Size S: 13.8"-15.7" (35-40CM) Size M: 15.7"-17.7" (40-45CM) Size L: 17.7"-19.7" (45-50CM) Material: Nylon + 3M reflective material Package content: 1 x pet collar Comfortable - The wide soft mesh padding and ergonomic design make this nylon dog collar comfortable and help prevent irritation to your dog's fur or skin 3M REFLECTIVE MATERIAL - Nylon webbing with 3M reflective material provides improved visibility and safety during nighttime walks. This padded collar features durable reflective nylon webbing, neoprene padding, and a sturdy buckle to help keep your pet safe and visible in low-light conditions Easy to use and clean - These nylon collars are simple to clean and maintain, making them ideal for daily use Adjustable buckle - The adjustable design allows for a secure and customized fit. The durable buckle is easy to fasten and remove, providing a reliable and long-lasting closure Size guide - Please measure your pet's neck with a soft tape measure. Allow 0.7-1.1 inches (2-3 cm) of space for a comfortable fit that lets your pet breathe freely. Refer to the size chart for the best fit: XS: 11.8"-13.8" (30-35CM); S: 13.8"-15.7" (35-40CM); M: 15.7"-17.7" (40-45CM); L: 17.7"-19.7" (45-50CM)