Here is the “SEIL Bag“, a backpack concept for cyclist that lets you display messages to cars behind you, like a turn left signal or a “thanks”. The bag can also displays emoticones and has even a acceleration sensor detects speed and turns on stop signal automatically. A nice gadget concept imagined by Lee Myung Su, Park Geun Wan and Park Okhee for Leemyungsu Designlab.
via yankodesign
