Built for the Outdoors: Features a durable fencing solution and waterproof pet collar with DryTek technology for hunters, trainers, and outdoor dog owners Comprehensive Containment & Training: The SportDOG Contain + Train System offers dual-purpose functionality with an electric fence and adjustable neck collar to train and contain Expandable & Flexible Use: This in-ground pet fence supports a multi-pet training system and covers 1 1/3 acres with the option of covering up to 100 acres for multiple pets with additional wire and collars Built for the Field: SportDOG gear was designed by professionals who demand durable, no-nonsense tools that perform in real-world conditions without fail Trusted by Serious Trainers: Professionals rely on SportDOG for proven performance, consistent control, and expert-backed training guidance that gets results