Complex sentence: Gimbap is usually well wrapped (with Aluminium-foil in tradition, but maybe with edible papers in these days) and does not have any liquid things inside, so traditionally Korean people carry Gimbap in their picnic or trip.
Split into simpler sentences: Gimbap is usually well wrapped (with Aluminium-foil in traditional, but maybe with edible papers in these days) and does not have any liquid things inside. So traditionally Korean people carry Gimbap in their picnic or trip.