[header] How to pack a backpack [title] Choose your backpack. [step] With dozens of backpacks on the market these days, it may be difficult to select the best one for your life and travel commitments. Backpack sizes are measured in the number of liters they can carry, and range from 20-80 + liters each. 
Consider the length of your trip (s), your torso size, and the conditions under which you are backpacking. Whenever possible, choose a smaller and therefore lighter pack to make traveling more comfortable.