Made of food grades silicone, plastic lid, BPA Free. The tab on the bottom of the cup makes it easy to open it up as well as making it more stable when placed on a flat surface. Durable, flexible and reusable.
Collapsible design, only 0.59In when collapsed, the small volume and lightweight made them both of these use for home and outdoors. The folding design can be adapted to almost any occasion, such as indoor rest, sports fields, mountain climbing, camping, cycling, tourism, etc.