This 350ml Vacuum Insulated Pocket Flask Cup, crafted from durable 304 stainless steel, ensures your beverages stay hot or cold for hours. Its compact design fits conveniently in pockets or bags, making it ideal for on-the-go hydration. The vacuum insulation minimizes temperature transfer, preserving drink quality while preventing exterior condensation. Perfect for professionals and outdoor enthusiasts seeking reliable temperature retention in a sleek, sturdy cup.