Calm Your Pets Quickly: our cat calming collar suit is suitable for cats who are frightened, stressed, anxious or hyperactive; It will start working within 1 hour, help improve their bad behavior, reduce pressure on pets, this cat and dog comfort collar can effectively help your cat or dog quickly adapt to the new environment Continuous Sedation for 30 Days: cats and cats' sedation collars take effect quickly, releasing pheromone for up to 30 days, provide better and longer lasting pheromone delivery; Wear it continuously and change it every 4 weeks for good results; Waterproof, no need to remove the collar when bathing or playing in the rain Safety Effect of Natural Substances: the pure natural essential oils of natural lavender and chamomile help to continuously relieve tension and anxiety; Let your pet relax and eliminate aggression, which can be applied for a long time, anti-sensitive Suitable for Most Sizes: 15 inches/ 38 cm adjustable length, our calm collar is flexible, so it can fit almost any type of large and medium cats and even small dogs of most weights and sizes; You can choose a comfortable length, and then reduce the excess Effectively Improve Bad Behaviors: calming collar for cats supports cats to improve bad behaviors; The gentle fragrance helps your cat calm down, reduce stress, help your cat improve life