Premium Material: High quality 18/8 of 304 Grade stainless steel. Light weight and lead free. Durable quality, rust-proof, sweat proof, easy wash and unbreakable. BPA Free Lid: Eco-friendly lid, extra sealed to provide maximum splash-proof capability. Drink hole on the top for easy sipping. Straw friendly. Stylish Designs: 12oz capacity designed especially for you to enjoy your wine and coffee. Curved body for easy holding. Advanced technology coated, exquisite for your home, parties, outdoors