"This 510ml stainless steel coffee cup is designed to keep your drinks hot or cold for hours. The double-walled insulation and thermal thermos technology work together to maintain the perfect temperature, whether you're sipping scorching hot coffee or refreshing iced tea. The durable stainless steel construction is resistant to rust and scratches, making it a great choice for daily use. The cup is also spill-proof and leak-proof, ensuring that your drink stays contained even on-the-go. With its sleek design and comfortable grip, this coffee cup is the perfect companion for your daily commute, outdoor adventures, or simply enjoying a quiet moment at home."