1. Stainless steel insulation tumbler: made of food grade 304 stainless steel. Stainless steel coffee cups are durable, do not rust, are harmless to human health, and have no metallic taste. The interior is electropolished. There is a fashionable color layer on the outside to keep it fresh and clean. 2. Travel tumbler without BPA: It is equipped with a leak-proof cover, handle and two reusable straws, both of which do not contain BPA. There is a drinking hole on the lid, which can be used for putting straws or drinking directly. The sliding cover has a rubber washer to ensure a tight fit. So it can be closed quickly to prevent leakage and splash. 3. Vacuum insulation tumbler: The insulation tumbler has a vacuum double-wall design to ensure good insulation. No matter which season, you can enjoy your favorite hot and cold drinks for a long time. The heat preservation time of hot drinks is up to 6 hours, and that of cold drinks is up to 12 hours. 4. Portable large-capacity coffee tumbler: The size of the bottom of the cup is convenient for you to hold firmly, and the tumbler can be safely placed on most car cup holders. The big cup mouth makes it easier for you to clean the tumbler. The handle is also easy to disassemble. 5. Suitable for family and outdoor: suitable for swimming, sports, travel, road trip, barbecue, camping, parties, etc. You can share them as gifts with your family, friends, teachers, colleagues and sisters on birthdays, Thanksgiving and Christmas.