Meet the Ninja Thirsti 18 oz. Travel Bottle engineered to keep drinks colder and fizzier for longer. This innovative drinkware is designed for carbonated drinks but is perfect for still sparkling hot or cold drinks too. Leak Lock lid won?t leak drip or spill. This durable 18/8 stainless steel bottle resists scratches and dents and fits in most cupholders making it ideal for life on the go.