On their website Knog say this about themselves:
"knog is SEXY URBAN BIKE simple"
Knog are a bit like the Crumpler of cycling gear, they are wacky and instantly recognisable. The difference being that Crumpler stuff is quite expensive but Knog represents great, innovative design and awesome value for money. Their Frog range of LED's must be the most popular choice for fixie riders the world over, recently their other lights have been popping up on bars and seatposts all over town too and the buzz about their no-nonsense cycle computers is louder than an orgy of bees inside a traffic cone. I must insist that you support Knog (I'm sure you already do) as they have been very generous, whoop! Click the pix below to go to the official site...