Durable Material This 50L backpack is made of 600D Polyester and includes a RAIN COVER the buckle and zipper are all made of YKK MOLLE Webbing This internal frame backpack can hang on small items, or for attaching additional tactical pouches or gear Quickly Access The survival backpack has large zipped access at front that can quickly access to the main compartment,opend as a luggage Customizable Comfort Adjustable Padded sternum strap and hip belt , Breathable mesh bearing system design mean this rucksack can comfortably fit men, women of different body sizes Multifunctional This tactical molle backpack with chest straps to cope with the weight so that it's well used as a 3 day assault pack,bug out bag,survival backpack,army backpack,trekking backpack or day pack and it is a nice choice for Gift.