This glass is perfect for use in cars, cafes, offices, and homes. Its exquisite patterns, domineering text, and practical performance make it a great birthday gift in September. Everyone who receives it will surely love it. The double-layer design, including an inner layer of 304 food grade 18/8 stainless steel, ensures better heat preservation and is BPA free, making it environmentally friendly and non-toxic. The humanized design is safe and waterproof, with a streamlined cup body and a thickened non-slip design at the bottom for easy use and storage. The double-layer airtight design allows for hot tea or refreshing ice water on-the-go. It also comes with a protective cap to avoid spills and protect your drink from dust, dirt, and flies. Plus, it's easy to wash with clean water and can be recycled.