NIGHT SAFETY GUIDEAre you afraid of losing your dog while walking at night? Our luminous dog collar will help you eliminate these problems. Our ultra-bright dog collar is very bright and easy to see, allowing you to maintain 500 meters of visibility in low or no light conditions, allowing distant drivers, cyclists and joggers to see you at a glance. advances the night. HIGH-QUALITY MATERIALThis LED dog collar is made of nylon and PU leather, which is durable and waterproof. This flashing dog collar is slightly waterproof, don't worry about walking the dog in light rain every day, but please don't let the collar soak in the rain or wash the collar for a long time, wipe it gently to make sure it works normally. (Note: Please do not wash and soak in water). FULLY USB RECHARGEABLEThis personalized dog collar is USB rechargeable (charging cable included), more economical and eco-friendly. environment. DUAL-USE COLLAR - MULTIPLE COLORSOur dog collar is designed with a unique dog paw print, which is stylish and ideal for glowing in the dark for added safety. This glow in the dark dog collar has adjustable constant lighting mode in six colors (red, blue, green, pink, light blue, yellow) and automatic cycle lighting mode in 6 colors, and switch with one button, you allowing you to quickly find your pet. 3 adjustable sizesOur LED dog collar is available in 3 sizes. Be sure to measure your dog's neck before ordering, don't just choose a size based on your dog's weight or breed. Size S fits neck circumference 11.8-15.7" (approximately 30-40cm); M: 15.7-19.7" (approximately 40-50cm); L: 19.7-23.6" (approximately 50-60 cm). (NOTE: Adjustments are not limited to the black nylon adjustment area)