High-quality material: Made from high-quality polyethylene and PA for excellent tension and durability. Versatile size: Measures 9.4 x 15.4 inches when deflated and inflates to approximately 3 inches in diameter and 13.7 inches in height, ideal for 750ml wine bottles. Fast-inflating design: Each bag has 14 independent columns that inflate in just 10 seconds. Complete protection: Bubble film protects the bottle in all directions, and each column is airtight, preventing leaks. Wide application: Protects not only wine bottles but also ceramics, champagne, electronic devices, and other fragile items.