High-quality Material: The wine bottle protector is made of high quality PE/PA. Has good tightness and flexibility, Thick and durable,shockproof. They are flat pack until you need them, they don't take up much space at all. The size of the bottle protector bag is about 7-pillar extra-thick (diameter 8, suitable for height 30, 32CM). Designed to hold most 750 mL sized bottles of wine. Easy to Use: Find the inflation hole at the collar of the bag. The green arrow-like sign indicates the direction of the air. Use the provided hand-held air pump. Plug the air pump nozzle into the inflation hole, and then blow the bubble bag. Please do not over-inflate it for that may cause damage. Great Versatility: Every Inflatable bottle protector has 7 independent columns, The air column is an independent chamber, It only takes about 10 seconds to fully inflate. If one is punctured, the rest will still work. Just Inflate the bag, put the wine in the bottle protector, These bags absorb the impact from the outside. and guarantee safety during transportation. Wide Applications: These inflatable bottle protector bags can be used to pack your whiskey, liquor, wine, beer, Cups, or any large glass bottle. Cushion-like packaging can provide cushioning and provide protection during travel and transportation. Use when traveling on airplanes or cruise ships. The generous size of an inflated wine bottle protector will help reduce the likelihood that a bottle will break as the bottle is suspended in a pillow. Why Need This Wine Bags: 1. Protecting wine bottles from breaking during air, cruise, and car travel. 2. Protecting wine labels from getting scuffed or marked up in a suitcase. 3. Protecting other packed items from stains in case the wine bottle does break or the bottle closure (e.g. cork or screw-cap) is compromised while flying.