The Pebbly precision measuring glass has a protective non-slip silicone base, which is removable for cleaning or if you need to read small graduations. Composed of borosilicate glass, it is resistant and light at the same time. Highly practical, it is suitable to use in the microwave, refrigerator and even the freezer! No more calculating conversions either! It has 4 liquid graduations: cl/ml, cup and Fl. oz.