As far as battery cases go… the Legion linkable 18650 battery case is right up there with the most SEKSI of them. =) Seriously though, this 5 pack are linkable by the case side with VPDAM’s unique and innovative design to make a SEKSI, safe and functional 18650 transportation solution. They come in two different colorways: black and white. But, it seems like Fasttech only have the black colorway available at this time. Not a bad deal if you’re the type to bring some spare batteries with you on the road.