1. STAINLESS STEEL INSULATED TUMBLER: It is made of food-grade 18/8 stainless steel. Stainless Steel Coffee Tumbler is firm, Rustproof, No harm to human health, and without metallic taste. The interior is electro-polished. The exterior has a stylish layer of color to keep it fresh and clean. 2. 30OZ : it comes with a leakproof lid and two reusable straws, which both do not contain BPA. There is a drinking hole in the lid for placing a straw or drinking directly. The sliding lid has a rubber gasket that ensures a tight fit. So it can be quickly closed to avoid leakage and spatter. 3. VACUUM INSULATED TUMBLER: 30oz Insulated tumbler has a vacuum double wall design which ensures good insulation. No matter which season you are in, you can enjoy your favorite hot and cold drinks for a long time. Keep cold drinks cold for up to 24 hours and hot drinks hot for 6 hours. 4. PORTABLE SUPER-CAPACITY COFFEE TUMBLER: The size of the bottom of the cup is convenient for you to hold firmly. A large cup mouth makes it easier for you to clean the tumbler. The tumbler can be safely placed in most car cup holders. 5. GOOD FOR HOME AND OUTDOORS: Suitable for swimming, Sports, Travel, Road trip, Barbecue, Camping, parties, etc. You can share them as gifts on birthdays, Thanksgiving, and Christmas with your family, friends, teachers, colleagues, and sisters.