Stainless Steel Eggshell Mug Mini U-Shape Double Layer Vacuum Insulated Cup 1. Material: 304 stainless steel inner liner + 201 stainless steel shell 2. Insulation performance: 6-12 hours 3. Selected stainless steel material production, vacuum insulation, easy to use, hot and cold can be, the gathering of essential, portable and drop-proof 4. Reinforced cup bottom, concave-convex cup bottom design, placed in a smooth and not easy to pour 5. Rounded mouth, rounded design, to protect the lips, so that you can drink without fear 6. Delicate lid, sealed lid, dust-proof and dust-proof, safe water storage 7. Easy to carry, essential for outdoor travel and sports, each mouthful is the temperature you want 8. Usage: suitable for elders seniors, children, friends, colleagues, teachers on birthdays, travel commemorations, graduation, housewarming, party gatherings, visit the sick condolences and other occasions as a gift or for their own use 9. Weight: about 180 g 10. Size: height of about 11.5 cm