Excelity&reg; Double Wall Clear Heat Resisting Glass Tea Coffee Cup with Saucer (6 Oz) Purely manual blow-molded heat resistant cup The instant bearing of temperature range: -20~120 Will keep liquid hot or cold for a longer period of time while the outer glass remains safe to touch Lightweight, thermal, borosilicate glass; 2-layer construction resists heat and prevents condensation Dishwasher, Microwave and Freezer Safe