Instant Compression This Vacuum backpacks Dual-Valve Air Pump System compresses gear in seconds with the included electric pump (or manually release air). It also inflates items - perfect for travelers maximizing luggage space. Weather-Ready Design The backpack features a water-repellent exterior that sheds rain, while its vacuum-sealed waterproof core keeps contents completely dry.Everyday practicality meets extreme weather performance, making it ideal for urban commuting and outdoor adventures. Versatile & Organized Designed for travel, gym, and daily use, this backpack features a compression main compartment with multiple inner pockets, plus a quick-access front organizer to keep essentials neatly secured. The breathable back panel ensures comfortable carry. Airline Travel Essential - Maximize carry-on space with a TSA-approved design that facilitates quick security screening.