<p><p><b>The Overall Function Description:</b></p> This is an expanded high quality universal models outdoor Backpack. Two Size of Loading Space,DIY System ,suitable for most people to Travel,Camping,Hunting,Trekking and Hiking</p> <p><p><b>Description Of Each Part(what you can hold):</b></p> Front Compartment (11 "X7") :Mobile phones, walkie-talkies, pens, batteries, chargers, keys, laptops, tablets, wallets, documents, etc. <br>Middle Compartment (15 "X10"): IPAD, tablet, notebook computer, etc.</br> Main Compartment (20 "X13") :clothing , tent, big laptop computer</p> <p><p><b>Package Other Function Description:</b></p> *An Organizer pocket has several mesh compartments built in. Side parachute clasps. Easy grip zipper pulls .Back support belt with parachute clasps <br>*It can be compressed to 39 liters or expanded to 64 liters of carrying space. Side parachure claps allow for tightening to provide a compact , easy to transport pack.</br> *Constructed of 600 denier polyester with vinyl backing <br>*Easy grip zipper pulls</br> *Water resistant</p> <p><p><b>Packaging Description</b></p> Weight：2.6 lbs <br>Carton Dimension: 21 x 16 x 14 Inches /10 pcs in each box</br> One Dimension(with USPS box):13x11x3 Inches /1 pcs</p>