SET INCLUDES: 1*5 Liter Collapsible Water Tank Carriers. Constructed to hold saltwater or fresh water or some other drinkings. FREEZABLE- It can be freezed with liquid. Besides, it can weaken sunlight burn inner liquid directly. FOOD-GRADE MATERIALS: Made of clear, non-toxic, food-grade safe plastic; Reusable, convenient, durable, space saving, and non-toxic. CONVENIENT: Features integrated handles for portability and large 1.4 inch bottle mouth for effortless filling and pouring. Screw-on cap provides leak-proof seal. SPACE SAVER: Portable water carriers are perfect for camping, hiking, travel, concerts and other outdoor activities. Simply air dry and fold flat to store away between uses.