Made of ultra clear borosilicate glass (not plastic), good for cold drink or hot drink. No worry of BPA or plastic taste * Air insulated in the unique double wall structure keeps cold drink cold and hot drinks hot, the outside surface always feels comfortable in hand. * screw-on lid with drinkhole made of premium BPA-free engineering plastics (ABS). It is easy to fill and easy to drink, even with straw. * This high quality glass is perfect to use in the home, office or car. Fits most car"s cup holder. Work perfectly with Sun"s Tea Deep Infuser(sold seperately) for flavor drink infusing * Dishwasher and microwave safe glass body, 6 month warranty from Sun"s Tea.