product description 1. Exclusive Design Principle: rum runner flask no plastic taste, foldable, frozenfloating, reusable, Puncture proof,odor proof 2.Refuse To Leak Damage: Our plastic flasks for cruise ship Compressive resistance twice as long as any other on the market hidden alcohol flask,It wouldn't even leak out if an adult stepped on it 3.Reject Expensive Water: hidden flasks Non-metallic material Undetectable by X-Ray Scanners, and Other Detectors is ideal for bringing water,milk, Juice and more in cruise ships, commercial airplanes, parties, theaters, camping, fishing, beaches and other activities 4.Fall in Love With Summer: Fill juicemilk in a plastic flask and refrigerate until half is frozen, knead can enjoy the feeling of the smoothie particles hit the hot sun weather