Material: 100% Polyester. Keep your things safe and dry with this stylish and functional backpack! Volume: 30 LSize: 51,5 x 27,5 x 20 cmIntegrated rain coverBig main compartment with zipperTwo mesh side pocketsSoft, adjustable, quilted shoulder strapsPadded, ventilating backsideAdjustable waiststrap for best fitThis model is a 30L bag with straps that is suitable for both adults and older children. The bag sits tight and is designed for a close-to-body fit. It is just as suitable for excursions in the archipelago as it is for a day trip in the mountains. The backpack is equipped with adjustable chest straps. On the outside at the bottom of the bag there is a compartment with a rain cover that you easily pull over the bag if the weather turns bad, works fine both on your back and when you leave the bag on the ground. There is a carry handle at the top of the bag. The carrying straps are padded, which together with the padded and ventilated back makes for a very comfortable backpack. On the outside of both sides there are pockets in mesh fabric where you can keep wet things or anything you want easily accessible. Inside the backpack there is a compartment against the back with a zipper. On the outside of the rucksack there is an elastic fastener where you can put an extra sweater, a water bottle or something else. With Columbus you can prepare for all kinds of adventures.