good. The design is fine once you use it.
It took me a while to get it, but I got it very well. It works well without any problems. I'm worried that two screws on the inside of the bottom hydrogen outlet are exposed to water, but it is getting rusty.
The interior is not cleaner than I expected. The plastic contains an unknown filter.
★ Small water tumbler ★ Rechargeable water small tumbler / Portable water small tumbler / Park Jinhee water water / Active oxygen hydrogen bubble / Anti aging