Durable and PetSafe Blue Shell: A shockresistant, thick blue shell tested against drops and bites. Made with nontoxic, BPA materials for safe chewing and rough play. Suitable for All Energetic Pets: From tiny pups to mediumsized chewers, this automatic ball adapts to your pet. Its erratic movements captivate pets of any size, while the durable construction withstands enthusiastic play day after day. Smart Obstacle Avoidance and Irregular Motion: The automatic moving ball uses advanced sensors to deliver unpredictable zigzag movements and instant obstacle dodging, turning playtime into an exciting chase that sparks natural hunting instincts. Convenient to Carry When Going Out: Compact and lightweight, this self moving dog ball is ideal for onthego fun. Its small size is easy to pack, allowing interactive play and entertainment with your pet during walking or travel without taking up much space in your bag. Use scenarios and applications: At home with a single dog or multiple pets for independent or supervised play to boost activity and mental stimulation. During walks or travel to entertain pets during breaks, errands, or waiting times. In households with energetic or strong chewers to provide durable, engaging play that reduces boredom and promotes exercise.