When climbing the mountain, climbers will need two luggage bags, preferably a large duffel/cargo bag and a smaller, lighter day sack, between 25 – 35 liters size. The porters will carry the larger duffel/cargo bag, while climbers carry their day sack themselves. The day sack needs to be comfortable, durable and big enough to hold everything a climber may need with them when walking, as it is unlikely that they will see their main bag from the moment they break camp in the morning to the time they arrive at camp in the evening. Day sacks and larger bags are available for hire if you do not have access to such, or would prefer not to take your own bags to the mountain. In an attempt to reduce the waste and rubbish on the mountain, the Kilimanjaro National Park Authority have now decreed that climbers must have their own trekking water bottles / containers for their trek and are required to decant any bottled water into them prior to progressing through the entry gate.