There many cups in present market, which is of many different material, the Boroslicate3.3 glass cup is the safest. Why say so?
1.Boroslicate3.3 glass is a type of glass with silica and horon trioxide as the main glass-forming constituents. Borosilicate glasses are known for having very low coeffeicients of thermal expansion (~3 × 10−6 K−1 at 20 °C), making them resistant to thermal shock, more so than any other common glass.
2.Borosilicate3.3 glass cup is very transparent, you could see any reaction in it when you add different material to your water.
3.You could see any stain or changing, and easy to clean and sterilize. The only downside to glass tea cups might be their ability to conduct heat, which might lead to you burning your hand when holding it. No worries though. Our glass teacups with handle allow you to pick up the hot drink without burning your fingers. Or you could choose our double wall glass cup to avoid of burning your hand.
4.As the borosilicate3.3 glass cup, which is easy broken, when dropping, which is just like life, you must take care of it, drinking more water to keep body safe.