Built-in 6 Whistles Emits multi-tone sounds during flight to grab your pet's attention, encouraging active chasing and play. Durable & Lightweight Design Made from pet-safe, chew-resistant material—perfect for outdoor adventures or indoor fun. Enhanced Interaction Promotes bonding through dynamic fetch games, ideal for training agility and obedience. Unique Pizza/Classic Disc Shape Eye-catching design adds extra excitement to playtime (choose between classic or pizza-themed styles!).