Unique Shape: Drawing from vintage barware, the custom molded design is uniquely B&P Co. Stainless Steel: Made from high-quality stainless steel, this drinkware is durable, rust-resistant, and easy to clean, making them perfect for daily use. Vacuum Insulation: Designed to keep your beverages hot or cold for up to 8 hours. Cupholder Friendly: A narrow base means our drinkware fits in most cup holders. Dishwasher Safe: Easy-cleaning