Ultrathin Folding: Each camping cup is only 0.59 high when collapsed, only weighs 2.4oz, fits well in pocket or backPack . Can be hung on the bag with hand rope. . Heat Resistant: Temperature range from -58F to 392F(not include lid). Safe for boiling liquids, foldable cup can hold hot coffee or tea, as well as ice cold beverages. . Convenient Use:The tab on the bottom make the cup easy to open and more stable when placed.The metal rim keep it in shape, easier to hold and drink.Tight fitting the lid prevent dust to get close. . Health Quality: Collapsible cups are made of food-grade silicone, BPA-free, non-toxic, Eco friendly. The lightweight cups suit for hiking, camping, picnic, sport events .