At Perilla, the bottles are designed for your active lifestyle. Take your Ayurvedic bottle to Yoga, Pilates, Spin, Class, Work or the Gym with confidence. With a new and improved leak proof water tight screw top lid, your water will always stay where it belongs, even when the bottle is upside-down! Plus cleaning an is fast and simple, just use lemon or Vinegar water and rinse, or use a bottle brush with a mild soap and air dry. We strive to have the best pure copper water bottle on the market. We use high-grade copper, and we do not use any coating. Customer satisfaction guaranteed - we'd love to hear your feedback!