Laptop backpack daypack suitable for unisex colours black grey style business capacity 20 litres weight 15 kg height 43 cm width 31 cm depth 18 cm max laptop size 15 inch features padded back water bottle pocket organiser internal pockets padded laptop compartment tablet compartment outside pockets front pocket mesh side pockets straps padded shoulder strap main compartment feature fits a4 size bag feature suitable as cabin luggage iata norm