When we need to go somewhere and we can't let the weather get the better of us Osprey Transporter Roll Top WP 30L backpack is our essential backpack. The conveyor with a capacity of 30 liters and a waterproof screw-on lid is specially designed for to carry everything you need regardless of the weather. Internal organizational pockets keep our things organized and the internal laptop pocket fits a laptop up to 13 inches diagonal. Airscape backrest provides comfort with foam backing and stretch mesh construction , providing comfort and breathability even if the backpack is full to capacity.