This 500 ml double-wall stainless steel bottle is designed for durability and temperature retention, featuring a 304 stainless steel inner wall and 201 stainless steel outer wall with a soft-touch rubber finish. Vacuum insulated to keep beverages hot or cold, it includes a screw-on 201 stainless steel lid with a convenient silicone carry loop, making it perfect for everyday use, travel, or outdoor activities.