The collapsible travel cup made of food grades silicone, Easy to clean, non-toxic, odorless, non-staining, durable, flexible & reusable. Not only It is fun, but extremely practical, this Folding Water Cup is a must for the busy traveler It helps you take medication and drink anywhere.This folding water cup is a suitable for the travel, hiking, camping, outdoor,Fishing,Mountaineering ,and Other Outdoor Activities and Concerts,etc. It can be hung on the bag connecting the hand rope and portable hook.The stainless steel rim of the cup is easy to hold and drink.Close the lid to prevent dust and dirt from getting tight.environmental protection can be reused.