Eshops School Backpack for Boys Book Bag for Kid Students Daypack Material: dacron Structure: 1 x main layer, 1 x subordinate layer, 1 x front layer, 1 x outer zipper pouch, 1 x inner zipper bag, 2 x outer mesh pocket Adjustable padded shoulder straps Dimensions: 12.6" L x 18.0" H x 7.9" W For the crowd: students in elementary school second to fifth grade