Contigo water bottles are primarily made from stainless steel and BPA-free plastic, depending on the specific model. The stainless steel bottles are designed to be durable and provide excellent insulation, keeping beverages cold or hot for extended periods. This material is also resistant to rust and corrosion, making it a long-lasting choice for hydration on the go. Some models may feature a plastic lid or a base, which is typically crafted from high-quality, food-grade materials that ensure safety and functionality. Additionally, Contigo often integrates features such as a powder-coat finish for added grip and style. For more detailed information about individual products, it is advisable to refer to the official Contigo website where specifications for each model can be found.