JanSport Big Student School Backpack (Grey Tar Flitter) Material: Polyethylene-Vinyl acctate Foam Dimension Approximately: (W)Top 29.6 CM/ Down 31.9 CM X(H) 48 CM X(D) 13.4 CM =(W)Top 11.65" / Down 12.55"X(H) 18.89"X(D) 5.27" Strap Length Approxmiately: 88.2 CM = 34.72" Outside Pocket: 5 ; Inner Pocket: 5 Capacity: 2100cu. in. / 34 L ; Whole Length of Deep: 29.8 CM = 11.73"