What is purpose of plus backpacks (i mean backpacks like 60+10 or 70+15 etc), im really noob at this and want to buy a backpack for a start, so plus ones are better or not?
Also im thinkin to buy Pinguin Explorer 75, pic and video related. Please help me on this.
https://www.youtube.com/watch?v=2GcM6Ak4OWM