Laptop backpack daypack colour black capacity 35 litres weight 14 kg height 475 cm width 356 cm depth 254 cm max laptop size 154 inch size of laptop pocket 39 x 28 x 4 5 cm features padded back outside pockets front pocket mesh side pockets straps ergonomic shoulder straps bag feature suitable as cabin luggage iata norm material synthetic fiber fabric specification nylon inner material synthetic fibre material properties water repellent m