Naturally Effective Plant-Based Formula: Featuring 100% plant-based insecticidal compounds as active ingredients, this flea and tick collar provides natural, safe, and effective protection for dogs and cats without the use of DEET or pyrethroids. Built-in Lasting Protection: Made from non-allergenic, soft thermoplastic rubber, the collar integrates natural active ingredients directly into the material during the polymerization process. These ingredients are released slowly over time, offering continuous 24/7 protection for cats and dogs. Flexible & Adjustable to Fit All Pets: Designed to fit pets of all sizes and breeds, the collar adjusts up to 25.59 inches (65 cm), making it suitable for kittens, puppies, and large dogs alike. Simply fasten and trim any excess length for a secure fit. Easy and Comfortable to Wear: Lightweight and comfortable, the collar is designed to be barely noticeable to pets. Ensure a proper fit by allowing space for two fingers between the collar and your pet’s neck. All-Weather & Waterproof: The integrated active ingredients ensure the collar remains effective in all weather conditions. It is fully waterproof, maintaining performance even when pets are bathing, swimming, or playing in the rain.