This is the highest level of premium dog water bottles from H2O4K9 Inc. Unlike any other dog water bottle on the market, the K9 Unit was engineered for Military, Search & Rescue and Law Enforcement K9 handler use and has been field tested by K9 handlers worldwide. Designed to hold up under extraordinary outdoor conditions, the K9 Unit is a perfect fit for outdoor recreational use. Designed to eliminate any complex parts that can rust, break, scratch or easily dent. The patented large capacity lid is made from heavy-duty, BPA-free plastic and allows your dog to drink naturally; with a wider, deeper drinking trough and sturdy built-in clip loop (clip not included). The rugged outer shell protects the bottle from the most challenging environments.