The bag usually features a very flexible monocrystalline solar panel, a charge controller, battery, cords, plugs and light bulbs. It can provide you with power that can charge electronic equipment or devices. Solar bags are also used in other purposes such as field research, international aid, emergency power and disaster relief.
Bushcraft Rucksack, Bergen, Backpack, Bugoutbag, Hunting, Survival, Mountaineering Gear. Another view of my Gillie'd ruck. This is the most comfortable pack I have ever worn... and I wear it a lot. - by Gillie Leather