Size of this product, 63cm Please measure your pet before purchasing. Dog Flea Collars: Dogs are prone to fleas and ticks when playing, which can cause itchy and irritated skin in pets. Therefore, it is necessary to regularly expel fleas and ticks out of the body to protect the dog's health. Long-term use: Be aware that the performance triggers when you open the pack. Dog flea collars can last 7-8 months and last a long time. Double packing of aluminum can and airtight plastic bag can also effectively maintain the effect. Flea and Tick Collars for Dogs: Even when your dog is bathing or playing, you don't have to worry about the effect of a flea collar on your dog. Contains natural plant essential oils, mild and safe, no irritating smell, can be used with confidence. ONE SIZE: Dog flea collars can be worn by both puppies and adult dogs, as this dog flea collar is designed to be adjustable and self-adjusting. If it is too long, you can cut it yourself, which is very convenient. Good for pets and humans: Certain parasites in dogs can harm the health of their owners, who have the most contact with pets and are therefore more susceptible to contracting bacteria. Therefore, it is necessary to put a flea collar on the dog, which is beneficial for the safety of the dog and the family.