1. Material: nylon + mesh2. Applicable objects: medium and large dogs3. Weight: S140g, M170g, L200g, XL220g4. S chest circumference 40-50cm, M chest circumference 47-57cm, L chest circumference 58-72cm, XL chest circumference 67-85cm5. Lake blue and fluorescent green are with LED lights, wine red and orange without LED lights, the LED light strap contains 2 replaceable button batteries. You need to pull out the battery protection plastic before use.6. LED light mode: press once: blue light-flashing slowly; press twice Blue light-flash quickly; press three times, color light-change; press four times Turn off the LED light7. Note: The product does not have a rope for a separate strap

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