Mesh Fabric Back Panel:- Sweat resistant and breathable honeycomb mesh fabric back panel structure with air circulation system provides comfortable travelling experience even on hot summer days, all day long.,, SHOE COMPARTMENT:- This backpack has a separate shoe compartment that is big enough to easily accommodate a pair of shoes. It can also be used to keep your travel laundry separate from your fresh clothes, SIZE, ADJUSTABLE STRAP:- These shoulder straps are fully adjustable allowing you to easily achieve a comfortable fit. The shoulder straps are padded that provide extra support.,, METAL ZIPPERS:- Zipper plays an important role in whole rucksack as no one want to have the zipper which stuck in middle. Our rucksack has rich quality metal zipper which runs smoothly and makes unload and unloading quick and easy.