Owala Kids insulated water bottle with built-in straw. Leak-proof design in a stylish green color. This 16-ounce, perfect for kids or anyone, insulated stainless-steel water bottle with a FreeSip spout and push-button lid with lock will be leakproof for all of your kids adventures. Patented FreeSip spout designed for either sipping upright through the built-in straw or tilting back to swig from the spout opening