This travel storage bags is made of high quality plastic EVA with Vent Hole which can squeeze out excess air for easy storage. But by contrast, bags with vent hole can't hold liquids, environmentally friendly, waterproof, dustproof, strong, durable. It can be used in school, work, crafts, while traveling and much more. Convenient to storage, not easy to break. A good travel storage bag for clothes, underwear, cosmetic, towel, drugs, store card, cellphones, cables and electric products etc.