No doubt if you’ve been caught out at least either forgetting your lights or forgetting your lock.

That’s why this design from the Seoul Cycle Design Competition caught our eye.  Lurking by Lee Jumin and Kang Sukjin is a bicycle lock which is adjustable in length (fat lamp posts) and when you’re not using it, it slips under your saddle and functions as a light.

Simple, stylish and functional. We like it a lot.