JanSport Big Student School Backpack (Black Stripe Attack) Material: Polyethylene-Vinyl acctate Foam Dimension Approximately: (W)Top 30 CM/ Down 32.5 CM X(H) 46 CM X(D) 13.5 CM =(W)Top 11.81" / Down 12.79"X(H) 18.11"X(D) 5.31" Strap Length Approxmiately: 87.4 CM = 34.4" Outside Pocket: 5 ; Inner Pocket: 5 Whole Length of Deep: 30.3 CM = 11.92"