Choose Your Wire: The PetSafe In-Ground Fence allows you to pick the wire gauge that best suits your yard, choose between Standard (20 Gauge) or Heavy Duty (16 Gauge) for this underground fence system Lightweight Receiver Collar: Designed for comfort, this lightweight receiver collar fits dogs over 8 lb. with neck sizes from 6 to 26 inches, making it a perfect adjustable dog collar Waterproof & Adjustable: The waterproof receiver collar offers 4 static correction levels plus tone-only mode for safe training, making it an essential dog training collar 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