Natural Safety EffectNatural essential oils of lavender and chamomile relieve tension and anxiety. Let your pet relax and eliminate aggression. Safe for long-term use. Hypoallergenic.No search. Fast and Long-Lasting ReliefRelief collar for anxious, stressed, anxious or hyperactive dogs. It will start working in 1 hour. Help you improve your bad behavior quickly and effectively. Reduces stress in pets. Effectively Improve Bad BehaviorOur dog calming collar can relieve anxiety or stress-related behavior caused by anxiety, stress, heat, loud noise, transportation, travel, vet visits,Fireworks, thunderstorms, separation anxiety and new surroundings. 30 Days of Uninterrupted Rest Dog and puppy tranquilizer collar works fast and releases pheromones for 30 days. Provides superior, long-lasting pheromone delivery. Wear it continuously and change it every 4 weeksachieve optimal results. Waterproof, there is no need to remove the collar when bathing or playing in the rain. Adjustable hose62 cm adjustable length. The silent collar is flexible and offers a perfect fit for almost all types of dogs of all weight and size classes. You can choose the comfortable length and then cut the most. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.