I saw someone carrying a tumbler 1000ml, and it made me wonder if it’s easy or hard to use every day. Does a tumbler 1000ml feel heavy when it’s full of water, or is it helpful because you don’t need refills often? Some people say it’s great for staying hydrated, while others think it’s too big for school bags. If you use a tumbler 1000ml daily, will it make life easier or just tiring to carry? I’m curious!