This collapsible cup is made of authentic food grades silicone. It’s easy to clean, non-toxic, odorless, non-staining, durable, flexible and reusable. It’s also uniquely designed with airtight silicone to seal your drink effectively that prevents leak.
✔ 550 ml maximum volume capacity with 3 adjustable sizes to meet everyone's needs.
✔ Withstands the temperature range of -58°F ~ 392°F.