Features: High visibility ,keep your dog safe in the dark. Four modes, which can be switched with one button, streaming lighting, fast flashing, slow flashing and stable lighting. Make your pet activities more eye-catching, prevent loss, avoid traffic accidents, and do not frighten pedestrians. The size can be adjusted. Soft and comfortable without restricting the dog neck. The glowing dog collar will keep your dog away from some potential dangers. Package Includes: 1x LED Dog Collar Specifications: Material: Silicone Size: Approx.70cm/27.56inch Light Color: Multi-color, Red, Pink, Blue, Green, Yellow, Orange, White, Purple(optional) note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color of the item.