Two sets of lids designed for duel purpose: making ice tea, fruit-infused water or making cold/hot brew coffee. Allows airtight storage in fridge for a fresh taste. The glass pitcher can stand a wide temperature range from 14 to 230 °F (-10 to 110 °C). Sturdy and convenient grip handle makes it easy to pour. Do not heat in microwave. We recommend washing all components with warm water and soap before initial use and after every use.