You will need to carry a knapsack large enough to hold 3-5 litres of water, your lunch, sunscreen and any extras you wish to carry. Depending on personal preference, you may want to take the following with you on each hike: some identification, cell phone, camera, rain gear (if the forecast indicates rain), spare pair of socks, band aids, toilet paper and wipes (there will likely not be facilities on route). Many hikers also take hiking poles with them.