The one cable to bring on high adventure trips. The outer shield is constructed from high end TPE, the same material used for audio cables for electric guitars. Not only does this create a unique feel for the cable, it provides durability unmatched by other charging cables. The distinct texture of this cable gives it a rugged edge over other charging cables. We use this cable when things get dirty; like when backpacking, out on extended photo-shoots, and as an emergency cable in the bottom of our ditch bag. Our caps are designed to keep out dirt and grime to ensure a long life for the lightning and USB tips, no matter where you take the cable.