Contigo Contico is good. I bought the insulation straw cup from his house on 1 1 month 1 1, and the insulation effect is quite good. Put a cup of warm water in the cup, and the water won't cool if it is left for a long time. It's really useful for people like me. Just soak the Chinese wolfberry and red dates. My throat is uncomfortable recently, so I also use it to make lung moistening tea ~