The lightweight cup with 350ml capacity is small and lightweight enough to hold in one hand, and the miniature body slips easily into your pocket, so you can drink a sip of warm temperature anytime. These durable thermos bottle s feature a unique matte powder coat finish and copper lining, vacuum insulation to keep heat and cold in, a wide mouth, and a BPA-free insulated lid. Made of high-quality 304 stainless steel, it is more insulated and safer for a wide range of beverages. The mouth of the cup is rounded and smooth for comfortable drinking.