Material: nylon rope, size: 33 * 1cm, Adjustable collar size: adjustable length, 19 * 32 cm, 1 cm wide, Suitable for most puppies and small pets, this reflective collar features a bell-shaped design for visibility in low light (note: tracking device not included) Easy tracking: this reflective collar is designed for compatibility with tracking devices, allowing you to locate your pet using a mobile app. The elastic case securely holds the device to prevent it from falling off. Safety upgrade: this collar features a circular breakaway safety buckle to enhance safety. If your cat gets caught, the buckle releases to prevent suffocation. Enhanced visibility: with three reflective strips, the collar makes it easier to find your cat in the dark. It also includes a removable bell for added charm. Lightweight and comfortable: made from well-constructed nylon, this collar is soft, breathable, and comfortable for all-day wear without irritating your pet's skin.