1. High quality 304 stainless steel cup body + transparent tritan cup cover, anti-bacterial and durable. 2. Vacuum Insulation: keep warm for 6-12 hours, keep cool for 12-24 hours. 3. Anti-skid cup cushion design, wear-resistant and functional. 4. Different fresh colors for choosing, exquisite and stylish. 5. A creative gift for friends or famliy members.