de.kitchen&hifun 50 oz sports glass water bottle with twist cap, clear borosilicate glass water bottle with neoprene sleeve, large glass thermo for coffee fruit vegetable juice nut storage tank de.kitchen&hifun <br>how to use this glass correctly?<br> <br>first of all, if you pour water or drink, we would like you to tightly cover the lid along the thread and carefully cover it to see if it is covered. if the cover is inclined, correct it in time. you can also place the liquid-filled cup in a large container and observe if any liquid is spilling. if there is overflow, please try to close the lid again.<br><br>our cup is 100% non-overflowing. <br><br>second, our cups can be washed in a dishwasher ,or soak for a while and brush with clean water or warm soapy water.<br> <br>in the market, we have two kinds of glass, one is low-silicon and the other is high-borosilicate. low-silicon glass is thicker, heavier, weaker to low temperature and high temperature, and low in cost. and we use medical grade borosilicate glass, which is light and thin, and the beverage inside will be more clear and beautiful from the outside, and it is more convenient to carry. you will find that baby bottles are made from this lightweight borosilicate glass. consumers will appreciate our glass more when they have a certain understanding of the material.<br>