Mermaid Cup Blue is an affordable and highly efficient drinking bottle that revolutionizes outdoor hydration. Its unique ergonomic design fits comfortably in your hand and allows for easy one hand sips while youre busy with other tasks. The bottom-mounted design helps keep the temperature of your beverage constant, while the double walled stainless steel construction gives the Mermaid Cup Blue an extra layer of insulation that keeps your drink colder or warmer, depending on the season. The Mermaid Cup Blue also features a locking lid that helps prevent accidental spills and eliminate the need for a travel mug lid. This makes the Mermaid Cup Blue ideal for busy lifestyles or for people who dont want to carry around a bulky travel mug. The cup also has a replaceable filter that can turn chemically treated tap water into cleaner and healthier-tasting water. The Mermaid Cup Blue is also designed to be extremely durable and lightweight. Unlike plastic bottles, the Mermaid Cup Blue wont shatter or break when dropped or even when subjected to extreme temperatures. Overall, the Mermaid Cup Blue is an ideal choice for individuals who are looking for an affordable and durable drinking bottle. It has a sleek design, great insulation and excellent filtration. Its also easy to clean and comes with a lifetime guarantee.