The M48 OPS Tactical Solar Panel Sling Pack lets you plug directly into the sun, an unlimited power source, to keep your smartphone charging wherever you are. A high-quality, 7 1/2”x 4 1/2” solar panel is built into a 600D oxford material frame, which has a mesh, zippered panel on the opposing side that serves to house a USB plug, plus, a smartphone. When you’re out under the sun, just simply plug in your smartphone to the USB port, drop it in the zippered pouch and let it continuously charge while you’re out and about. The panel is attached to the front of the pack with ABS quick-release buckles, so that it can be removed if you want to leave the pack behind or attach it to other gear. Constructed of 600D oxford material, the M48 OPS Tactical Sling Pack is extremely durable and has a main compartment with a small mesh zippered pocket to keep items secure, as well as, three more pockets. The back of the pack has a pocket with a snap closure and it is covered in a grippy polyurethane mesh to keep it in place against your body. It also has a deep zippered pocket. Each side of the bag features MOLLE straps and there is a small zippered compartment on the top of the bag. Hidden behind the solar panel, on the front of the bag, is a nice-sized zippered compartment, which has wallet features inside like credit card slots, and another small zippered pocket on the outside. The adjustable, nylon webbing sling strap is attached to the pack with heavy-duty ABS hardware. This solar panel backpack is perfect for a variety of uses including hiking, camping, traveling and as a bug-out bag.