[Efficient Heat Preservation and Cold Preservation]: Double-layer stainless steel vacuum insulation technology is used in these insulated water bottles to maintain the temperature of drinks for an extended period. Whether enjoying hot drinks in winter or ice water in summer, you can always have the perfect sip [ and Portable, Suitable for Students and Outdoor]: This stainless steel water bottle features a small-capacity, design, making it ideal for campus, office, gym, and outdoor travel. It fits easily into bags, allowing you to stay hydrated anytime, anywhere [Safe Material]: Made of high-quality stainless steel water bottle material, the uncoated inner liner is - and odor-free, ensuring every sip is safe and healthy, so you can drink with confidence Specification:B:Golden Color: As shown Material: 201 stainless steel + 304 stainless steel Package Contents: 1 x cup Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.