Customizable Safe Boundaries: The PetSafe In-Ground Cat Fence lets you create a secure roaming zone covering up to 1/3 acre with a customizable boundary shape of in-ground wire Quality Pet Fence: With 4 adjustable correction levels and a tone-only training mode, this static collar tailors to your cat's temperament and reinforces positive behavior Adjustable Neck Collar: The waterproof, battery-operated receiver collar fits cats more than 6 months old weighing over 6 lbs and offers adjustable neck sizes from 6-11.5 inches Global Mission, Local Care: With U.S. roots and worldwide reach, PetSafe delivers vet- and trainer-recommended solutions and exceptional customer support to create fields of joy for pets 25 Years of Trust: Since 1998, PetSafe has created safe, innovative, and trusted products that bring joy, enhance pet lives, and support the lifelong bond between pets and their families