The water Cups is make of food grade silicone and, which have good heat resistance, cold resistance, and pressure resistance, and can used in various outdoor water Bottles is impact-resistance and light weights, durability enough to resist any dropping, squashing, smashings, hit Suitable for outdoor activity such as hikings, camping, and mountaineering, it convenience to carry and drink It also suitable for various scenario during Travel, such as train, car,, to meet the water need of traveler Foldable and light weights, Can easily rolls this water Bottles into size for Travel It can easily put into your pocket, convenience to carry and store, and saving space Perfect for outdoor exploration and Travel