The Dura-Trek backpack is the perfect way to store all your hiking and camping needs in one bag. With a capacity of 45 litres, it features convenient side pockets and a pocket for water bladder (water bladder not included) when trekking through rough terrain. There are mulitple gear loops and bungee cords for attaching tools and gears. , , The outer fabric material is 600D polyester while the trim fabric is 600D honeycomb & 420D polyester giving you a strong, durable backpack that can handle rugged terrain with you. You also receive extra comfort and less friction with the built-in back support pads as well as sternum strap and hip belt. With an emergency whistle included as well, this backpack has everything a beginner to advanced hiker needs to support them through their trekking outdoor adventures.