Navigation (map and compass)
When traveling to a different country, you’ll never know what you will see and encounter along the road, thus it’s very important to always keep track of your destination. A map, a compass, and the high-tech GPS can save your from a lot of trouble,
Sun Protection and Insulation
Sunscreen, sunglasses, and clothes offer sufficient protection from the harsh sun and keep your body cool. Also, extra clothes can keep you warm and properly dressed for whatever weather condition you might encounter.
Light (flashlight or headlamp)
Backpacking can be both dangerous and uncomfortable, especially if you’re not very familiar with the place. Headlamp can be the best choice, as it allows you to have hands-free lighting.
First Aid Supplies
This is definitely a must-have, and I can’t stress its importance enough. You can make your own first-aid kit, or purchase those preassembled kits available in camping stores and drug stores.
Always having extra food for your trip, even if it’s only for a day of hike, can give you a lot of advantage while in unfamiliar place. In an extreme physical activity such as hiking, your body burns more calories than usual. You need to replace those lost calories to keep your body going. Put some non-perishable and no-cook foods with your bag to give your body the needed energy.
Like food, this one is another must-have in your backpack, which is quite a no-brainer, as you usually get thirsty a lot easier when walking for hours. Hydration will help your body maintain the right fluid balance.