Essentials for outdoor backpacking

Outdoor backpacking essentials depend on the length and purpose of your trip. However, here are some basic necessities:
Backpack: It’s important to choose a backpack that has the right size and features for your needs. If you're going on a multi-day hike, you'll need a backpack with multiple compartments and support systems to store all your gear. For shorter hikes or day trips, a smaller backpack will suffice.
Water: No matter what kind of outdoor activity you do, it’s important to carry plenty of water. A good rule of thumb is to carry at least two liters of water per person per day.
Food: You will also need to bring enough food to fuel your trip. Choose light, energy-dense foods such as nuts, energy bars and dehydrated foods.
First Aid Kit: In the event of an accident, it is important to have a first aid kit ready. Your first aid kit should include basic items such as bandages, antibiotics, and pain relievers.
Sunscreen: Even on cloudy days, apply sunscreen to protect your skin from UV rays. Choose a broad-spectrum sunscreen with an SPF of at least 30.
Insect repellent: Insect repellent can help protect you from mosquito bites that can spread disease. Choose a repellent that contains DEET or Picaridin.
Map and compass: Even if you have a GPS device, you should carry a map and compass. This will help you stay oriented in the event your equipment fails.
Headlamp: If you plan on hiking before dawn or after dusk, you’ll need a headlamp. A headlamp keeps your hands free for other activities, such as hiking or setting up camp.
Multi-Tool: A multi-tool is a handy tool that can be used for a variety of tasks, such as repairing gear or opening a can.
Whistle: If you are lost or injured, a whistle can help you signal for help.
Trash Bags: Be sure to bring a trash bag with you to take your trash with you.

Depending on your specific needs, you may also need to bring other items, such as extra clothing, a sleeping bag, or a tent.