Our vacuum travel mug is made of the highest quality premium 304 18/8 food grade stainless steel, Lead free and not easy to fade, crack or peel, healthier and durable than plastic cup. Wide opening is easy to clean without worrying about dirt. The shape is tapered designed , so fits most car cup holders.External powder coating will not sweat and slippery.This 30oz stainless steel tumbler with lid are suitable for drinking tea, coffee, and water and so on. great for outdoor adventure, road trips,