Put your bedding at the bottom. Near your back, place heavy equipment (tent, stove, food). Pack your clothes around these items. The groundsheet can be placed under the flap; the tent under the bag if there’s no space inside. Keep a waterproof jacket and fleece to hand. In the pockets, place small items for the day (sunscreen, map, glasses...). The water bladder can be placed in the compartment generally provided down the back.