14 Oz Mug Tumbler includes an insulated water bottle with a handle, reusable silicone straw, and a 3-in-1 flip lid that lets us sip, drink, or gulp. Cold up to 12 hours, hot up to 8 hours. Made of high-quality 18/8 food grade stainless steel, the surface is covered with a durable and beautiful powder coating. By combining these high-quality materials, we ensure the durability of stainless steel.