HIGHLIGHTS Compression Pump Included Weather Resistant Airtight Zippers Our Compression Bags will allow you to fit more in your travels, eliminating the stress of running out of space. Available in three sizes suitable for a backpack (small), carry-on (medium), or luggage (large). Effortlessly compress the packs using the included travel-sized electric air pump. With its durable, water-resistant exterior and heavy-duty sealed zippers, you can expect airtight sealing with no air escaping and complete protection from external particles.