100% Polyester
Nylon lining
Zipper closure
Ample Space and Reasonable Design: Dimensional design meets the maximum
size allowed by IATA flights, easy to carry around; Capacity: 40
L;Backpack size:19.6*13.8*9.8 INCH; Main compartment
size:19.6*12.6*5.5INCH.

Easy to Organize: The computer compartment with protective foam pad can
store up to 17 inch laptop. With the small item storage bag on the lower
front side (there is a key buckle in the storage bag), and a quick
access storage bag on the upper front side, you can store and organize
all personal belongings conveniently and quickly.

Comfortable: Thickened sponge handles and
shoulder straps provide you with more comfort when you are carrying and
gripping the bag; The chest strap relieves shoulder pressure for weight bearing.