Feature:1. [With USB Charging Port] The vacuum backpack comes with an external USB charging port, allowing you to connect a power bank (not included) inside the bag for on the go charging of your mobile devices.2. [Large Space] With a large capacity main bag and several pockets, our travel compression backpack enables quick access to your essentials, keeping everything neatly categorized for your convenience.3. [180 Opening Design] The travel vacuum backpack features a convenient 180 opening, specifically designed to accommodate larger items, making it easier for you to access your belongings.4. [Wet Dry Separation] This compression backpack includes a wet dry separation feature, allowing you to store damp items such as towels and umbrellas without worrying, keeping your other belongings dry and clean.5. [Rain Proof] The vacuum backpack is crafted with rain proof materials, ensuring your important documents and laptop stay protected from rain, preventing any embarrassing damage from unexpected weather.6. [Practical Design] The backpack features smoothly zipper for easy opening and closing, shoulder strap adjustment buckle for freely adjustment according to individual height, reinforced handle and shoulder straps for long lasting durability, and soft handle for easy handling.Specification:Item Type: Vacuum BackpackMaterial: Rainproof Polyester, 1680D Oxford ClothColor: BlackSize (LxHxT): Approx. 32x46x16cm / 12.6x18.11x6.3in (Expandable Thickness: Approx. 24cm / 9.45in)Accommodation: Mobile phone, umbrella, earphones, wallet, computer, clothing, etc.Capacity: 22L-55LType: BackpackPower Interface: USBPump (with Built in Battery): Lithium Cell 1500MAHWeight: Approx. 1752.00g / 61.8oz.Package List:1 x Vacuum Backpack1 x Pump (Built in Battery)3 x Accessories1 x USB Cable1 x Manual