TOP RATED PREMIUM Glowing/Flashing LED DOG Collar -for your DOG'S SAFETY at NIGHT and in DARK-LIGHT WEIGHT-3 MODES-Battery Included-COMFORTABLE FOR DOGS Adjustable 17.5"-22" Everyday Gears COMFORTABLE:This led collar is 1 inch wide and neck size is Medium-Large (17.5-22 inches).Light Weight for your dog's comfort. VISIBILITY: Tested to Maximize Visibility and Prevent Fatal Accidents,flashing dog collar can be seen for up to 1,000 feet. INNOVATIVE DESIGN & PREMIUM QUALITY -this glowing collar is fully adjustable, easy to put on & use, comfy, one click mode selection (always on, rapid flash, slow flash), with a quick-release buckle,Manufactured from High-Grade Premium materials BATTERY INCLUDED:standard CR2032 button battery. (lasts 60-70 hours) SPLASH RESISTANT LED GLOWING DOG COLLAR