Be careful to choose one that will meet all your needs. Here are 2 aspects that you must keep in mind while choosing a backpack:
The capacity of the backpack is the total amount of free space that is available inside it. It is usually measured in liters and is represented as a numeric figure in the make and model of the backpack. Liter is the unit of measurement of choice owing to the fact that it is a considerably small number that you need to remember. The volume of the backpack that you will need is dependent on the duration of the trip for which you are packing.
An overnight trip will require a backpack of 20-50 liters. While a 50-60 liter backpack will suffice you for your weekend trips. In case you have a multi-day trip planned (4-5 days) consider using a backpack that has a capacity of 60-80 liters. You will need a backpack with 80+ liters capacity for sustaining through a weeklong trip. Remember that the required capacity of your backpack will increase depending on the weather. These numbers are fit for summer time trips. You will need backpacks with 20 liters more capacity for trips during winter or rainy seasons.
Your Torso Size
It is of utmost importance to choose a backpack that is neither too big not too small for your body’s size. Thus it is necessary that you try wearing a backpack before purchasing it in order to determine whether it is perfect for your build. As a rule of thumb the size of your backpack must depend on the size of your torso. Also ensure that the backpack has a snug grip on your hips for increased comfort while carrying.
If your torso is smaller than 15 inches choose ultra-small backpack sizes. Small backpack sizes are fit for people with a torso size between 15 and 17 inches. Consider buying a regular or medium sized backpack if your torso is between 17 and 19 inches in size. Anything above 19 inches will require you to purchase an extra-large backpack. These measurements hold true for both men and women backpackers. Look for backpacks with contoured hip belts and shoulder strap in order to fit your body’s curves if you are a woman backpacker.
You must ensure that your backpack has other small yet important features while purchasing one. Ensure that it is waterproof, well padded, well ventilated and the material used for its production is light but strong.
Choosing the right backpack can make all the difference between enjoying your trekking trip and coming back dissatisfied.