F Gear

To stay ahead of the adventurous pack, this unisex backpack from F Gear is a must have. Air flow channels at the back are designed to help ventilate your back and delay the onset of your sweaty mess. The ridges are typically shaped to try to balance comfort with airflow and also reduce the surface area of your back against the backpack. In hot weather, though, they won't be able to prevent your back from getting sweaty. But at least they will delay it.