This tumbler is made from polypropylene material and has a double wall construction for insulation of hot or cold liquids. It has a snap-on and spill-resistant flip top lid. It comes with 13" flexi straw with tethered cap. It also has two lid openings, one with straw and the other one with sipper. It has measurement scale in ounces and milliliter makes tracking liquid intake easy. It meets FDA requirements and BPA free. Hand wash is recommended. Made in USA.