Double wall insulation coffee tumbler, The interior is made of food-grade 304 stainless steel and adopt one-piece molding technology, The lid is BPA-free with airtight silicone seal. Flip lid opens and locks easily, you can open the flip lid with thumb in one second. It’s great for daily life, outdoor adventures, home, office, parties, road trips, camping, traveling, in the car, at the beach, hiking, sporting active, picnics. It fit most of vehicle cup holders. It is also a good Ideal for business gifts and family gift! Price for 17oz, besides also have 12oz, email please.