It is easy to use and carry. It can be carried with you. It only takes up a small space and is convenient to use at any time. It is very convenient to put it into a handbag.
The unique book design and the unique ring design make the fashionable, environment-friendly and healthy cup more fashionable than the round cup.
.Suitable for indoor and outdoor use, mountaineering, party, school office, etc.
. light and elegant, transparent style, good air tightness
